Source: Official Guide for GMAT Review 2016 Sentence Correction; #137

5

By 1999, astronomers had discovered 17 nearby stars

By 1999, astronomers had discovered 17 nearby stars that are orbited by planets about the size of Jupiter.

1 Explanation

1

Adam

We need the past perfect to denote an event that occurred before a specified time in the past, so eliminate (D) and (E). (B) and (C) are unnecessarily wordy. (A) presents the information in the most concise manner.

Sep 1, 2017 • Comment

Add Your Explanation

You must have a Magoosh account in order to leave an explanation.

Learn More About Magoosh

Official GMAT Material

Official Guide for GMAT Review 2016

Official Guide for the GMAT 2015 14th Ed.

Official Guide for the GMAT 13th Ed.

Nova's GRE Prep

Official Guide for the GMAT 12th Ed.

Revised GRE PDF 2nd Ed.


Section 9.6 Sentence Correction

Improve Your Score

Magoosh GMAT is an affordable online course for studying the GMAT.

Learn More About Magoosh

Share Post

Email

Facebook