Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 1
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 1 · Josh Braslow
Sun · 1:00 to 4:00 PM ET
Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemand5 seats leftStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

OG-VR2#80 - difficulty understanding explanation

Expert replies
by sui generis » Tue Jul 24, 2012 4:35 am
Any medical test will sometimes fail to detect a condition when it is present and indicate that there is one when it is not.

(A) a condition when it is present and indicate that there is one
(B) when a condition is present and indicate that there is one
(C) a condition when it is present and indicate that it is present
(D) when a condition is present and indicate its presence
(E) the presence of a condition when it is there and indicate its presence

OA: C

I understand the OA but I don't understand the explanation that OG gives for choice A.

It states "The construction there is one leaves it in the final clause without a referent.

Someone please decipher what it means.
Join the discussion
Source: — Sentence Correction |

by Kasia@EconomistGMAT » Tue Jul 24, 2012 4:42 am
"It" normally refers to something.
e.g. Mary likes ice-cream but Steve does not like IT.
In this sentence "it" refers to "ice-cream" so ice-cream is the REFERENT.

The OG explanation states that "it" in the final clause does not represent any noun from the previous clause, which makes the sentence incorrect.
Kasia
Senior Instructor
Master GMAT - the #1 rated GMAT course

• If you found my post helpful, please click the "thank" button and/or follow me.

• Take a 7 day free trial and find out why Economist GMAT is the highest rated GMAT course - https://gmat.economist.com/

• Read GMAT Economist reviews - https://reviews.beatthegmat.com/economis ... mat-course
Join the discussion

by sui generis » Tue Jul 24, 2012 4:48 am
Thanks Kasia for the prompt reply.

But aren't all the 'it' in the sentence referring to 'condition' in choice A.

As per my understand, the two 'it' highlighted in red and the 'one' in green refer to condition. Please correct me here.

Any medical test will sometimes fail to detect a condition when it is present and indicate that there is one when it is not.
Join the discussion