BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

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.

★★★★★5.0559 reviews
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
Live EA class + 6 months of EA OnDemand
  • Expert-led weekly online sessions
  • EA Masterclass access between classes
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

130-point 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.

Jupiter’s gravity attracts comets and asteroids

Expert replies
by vishalwin » Sun Sep 27, 2015 5:58 am
og-15 RC-3

Jupiter's gravity attracts comets and asteroids
passing near it, substantially increasing the
bombardment rate of the inner moons compared to
that of the outer ones
. But because of Io's high
degree of geological activity, its surface undergoes
more-or-less continuous volcanic resurfacing.






The author's reference to Jupiter's gravity in line 25
serves primarily to
(A) indicate why the absence of craters on Io's
surface is surprising
(B) explain the presence of craters on the surface
of Jupiter's four largest moons
(C) provide an explanation for the lack of geological
activity on Callisto
(D) contrast Jupiter's characteristics with the
characteristics of its four largest moons
(E) illustrate the similarity between Jupiter's four
largest moons and the planets of the solar
system


Why option B is wrong? The portion highlighted in bold in above passage suggests that gravity is responsible for both inner and outer moons. Although the rate is different.

Can anyone please help me.


Thanks & Regards,
Vishal
Join the discussion
Source: — Reading Comprehension |

by VivianKerr » Wed Nov 04, 2015 10:12 pm
This is a Function question, so it is not concerned with what the passage says. The phrase "serves primarily to" tells us the question is asking what ROLE this specific detail plays in the structure of the passage. Don't confuse it with a Detail question.

Rephrase: WHY did the author mention J's gravity?

Well, ask yourself, what paragraph is line 25 found in? What did you decide what the function of that paragraph? Is it information or persuasive?

WHY does the author mention the fact of J's gravity? Its point is that J's gravity means its moons get smashed with asteroids.

Notice the next sentence, "But because of Io's..." The word "but" indicates a contrasting idea. Io is one of Jupiter's moons. So this contrasting idea is probably that, even though J's moons get smashed with asteroids, Io is somehow special and doesn't get smashed up.

Prediction: to show that Io is not like J's other moons

The correct answer is A.

To get this type of question correct, you must get inside the head of the author. :-)
Vivian Kerr
GMAT Rockstar, Tutor
https://www.GMATrockstar.com
https://www.yelp.com/biz/gmat-rockstar-los-angeles

Former Kaplan and Grockit instructor, freelance GMAT content creator, now offering affordable, effective, Skype-tutoring for the GMAT at $150/hr. Contact: [email protected]

Thank you for all the "thanks" and "follows"! :-)
Join the discussion