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 22
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 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
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
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

OG13 CR#116 Doubt

Expert replies
by tanvis1120 » Thu Aug 14, 2014 7:19 pm
I could not clearly understand the OG explanation. Could an expert please explain?

OA is E.
I marked D, though.
I would appreciate if someone breaks down the entire argument in terms of fact/opinion, premise, conclusion, too.

Thanks in Advance!
You do not have the required permissions to view the files attached to this post.
Join the discussion
Source: — Critical Reasoning |

by GMATGuruNY » Fri Aug 15, 2014 1:29 am
Scientists typically do their most creative work before the age of forty. It is commonly thought that this happens because aging by itself brings about a loss of creative capacity. However, studies show that of scientists who produce highly creative work beyond the age of forty, a disproportionately large number entered their field at an older age than is usual. Since by the age of forty the large majority of scientists have been working in their field for at least fifteen years, the studies' finding strongly suggests that the real reason why scientists over forty rarely produce highly creative work is not that they have aged but rather that scientists over forty have generally spent too long in their field.

In the argument given, the two portions in boldface play which of the following roles?

(A)The first is a claim, the accuracy of which is at issue in the argument; the second is a conclusion drawn on the basis of that claim.

(B)The first is an objection that has been raised against a position defended in the argument; the second is that position.

(C)The first is evidence that has been used to support an explanation that the argument challenges; the second is that explanation.

(D)The first is evidence that has been used to support an explanation that the argument challenges; the second is a competing explanation that the argument favors.

(E)The first provides evidence to support an explanation that the argument favors; the second is that explanation.
Boldface CRs are a MATCH GAME.
Determine the PURPOSE of each boldface portion.
Look for an answer choice that MATCHES.

WHY do scientists typically do their most creative work before the age of forty?

BOLDFACE 2 = The passage's explanation: Scientists over forty have generally spent too long in their field.
BOLDFACE 1 = A premise in support of the passage's explanation: Of scientists who produce highly creative work beyond the age of forty, a disproportionately large number entered their field at an older age than is usual (and thus HAVE NOT spent too long in their field).

Only answer choice E matches.
The first provides evidence to support an explanation that the argument favors; the second is that explanation.

The correct answer is E.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.

As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.

For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
Join the discussion