- tanvis1120
- Senior | Next Rank: 100 Posts
- Posts: 95
- Joined: Sat Dec 28, 2013 8:53 am•Followed by: 5 members
- Location: United States
- Thanked: 2 times
BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course
Redeem
Target Test Prep GMAT OnDemand
Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.
- 715+ score guarantee — highest in the industry (99th percentile)
- 52 chapters · 1,500+ lessons · 4,000+ practice questions
- 400 hours of video · 1,500+ instructor-led HD smartboard lessons
- 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
- 24/7 live support + weekly Zoom office hours with GMAT instructors
- TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
- 1,200+ flashcards + AI-powered study assistant & daily calendar
- OnDemand, LiveTeach & GMAT Bootcamp formats available
- Also: GRE, SAT Math & Executive Assessment courses
- MBA Admissions Consulting now available
- 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
- 200,000+ students served
- 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★
5.0
(559 reviews)
130-pt guarantee
$0 to start
then $127/mo
"adequate amounts" or "adequate amount"
Source: Beat The GMAT — Sentence Correction |
you need amounts because there are multiple people and thus multiple amounts.
GMAT Answers provides a world class adaptive learning platform.
-- Push button course navigation to simplify planning
-- Daily assignments to fit your exam timeline
-- Organized review that is tailored based on your abiility
-- 1,000s of unique GMAT questions
-- 100s of handwritten 'digital flip books' for OG questions
-- 100% Free Trial and less than $20 per month after.
-- Free GMAT Quantitative Review

-- Push button course navigation to simplify planning
-- Daily assignments to fit your exam timeline
-- Organized review that is tailored based on your abiility
-- 1,000s of unique GMAT questions
-- 100s of handwritten 'digital flip books' for OG questions
-- 100% Free Trial and less than $20 per month after.
-- Free GMAT Quantitative Review

Hi tanvis1120,
Most SCs are built around 2-4 grammar "issues" for you to work with, so if you find yourself unsure on 1 of the issues, you can look for other (possibly easier) issues to deal with that will help you to eliminate whatever wrong answers remain.
In this SC, I think that you correctly eliminated the first three answers because the Modification was incorrect. With the remaining two answers, if you're unsure about how to quantify "amount(s) of sleep" (singular or plural)....take a look at the phrase "and also" in Answer E.
"And also" is redundant; you don't need both of those words. Eliminate E.
GMAT assassins aren't born, they're made,
Rich
Most SCs are built around 2-4 grammar "issues" for you to work with, so if you find yourself unsure on 1 of the issues, you can look for other (possibly easier) issues to deal with that will help you to eliminate whatever wrong answers remain.
In this SC, I think that you correctly eliminated the first three answers because the Modification was incorrect. With the remaining two answers, if you're unsure about how to quantify "amount(s) of sleep" (singular or plural)....take a look at the phrase "and also" in Answer E.
"And also" is redundant; you don't need both of those words. Eliminate E.
GMAT assassins aren't born, they're made,
Rich
Jim is wrong here.
"Adequate amount" and "adequate amounts" would both be correct in this context. It is perfectly correct to talk about the "adequate amount of calcium needed for growing children," even though "children" is plural. The discrepancy - if one even exists - is that "amount" might refer to a single, agreed upon amount: exactly 8 hrs per person, per night, for example. "Amounts" might suggest that the amount of sleep might vary by person or by night.
This is what we call a RED HERRING split - intended to distract us, but not making a meaningful distinction between answer choices.
As Rich mentioned, the first 3 answer choices can be eliminated because the initial modifying phrase incorrectly modifies "people's." In E, in addition to the redundancy of "also," "the adequate amount they need" is also redundant. Thus, we're left with D.
"Adequate amount" and "adequate amounts" would both be correct in this context. It is perfectly correct to talk about the "adequate amount of calcium needed for growing children," even though "children" is plural. The discrepancy - if one even exists - is that "amount" might refer to a single, agreed upon amount: exactly 8 hrs per person, per night, for example. "Amounts" might suggest that the amount of sleep might vary by person or by night.
This is what we call a RED HERRING split - intended to distract us, but not making a meaningful distinction between answer choices.
As Rich mentioned, the first 3 answer choices can be eliminated because the initial modifying phrase incorrectly modifies "people's." In E, in addition to the redundancy of "also," "the adequate amount they need" is also redundant. Thus, we're left with D.
Ceilidh Erickson
EdM in Mind, Brain, and Education
Harvard Graduate School of Education
EdM in Mind, Brain, and Education
Harvard Graduate School of Education
As usual, the goal appears to be responding as quickly as possible, to maintain the "most responsive" grade, regardless of accuracy. Sigh...
-t
-t
Tommy Wallach, Company Expert
ManhattanGMAT
If you found this posting mega-helpful, feel free to thank and/or follow me!
ManhattanGMAT
If you found this posting mega-helpful, feel free to thank and/or follow me!














