Don’t lose your progress!

We cover every section of the GMAT with in-depth lessons, 5000+ practice questions and realistic practice tests.

Up to 90+ points GMAT score improvement guarantee

The best guarantee you’ll find

Our Premium and Ultimate plans guarantee up to 90+ points score increase or your money back.

Master each section of the test

Comprehensive GMAT prep

We cover every section of the GMAT with in-depth lessons, 5000+ practice questions and realistic practice tests.

Schedule-free studying

Learn on the go

Study whenever and wherever you want with our iOS and Android mobile apps.

The most effective way to study

Personalized GMAT prep, just for you!

Adaptive learning technology focuses on your academic weaknesses.

Sentence Correction: Pronoun Questions - Ambiguity

The 1980s was an important decade in the history of track and field competition, with a number of outstanding athletes becoming celebrities, breaking world records, and enhanced the visibility and popularity of international athletic events.

Incorrect.

This answer choice is grammatically incorrect. The first and second items in the sentence's list are non-conjugated verbs (becoming, breaking), but the third item is a conjugated verb (enhanced).

[[snippet]]

Well done!

This answer choice corrects the Parallelism mistake in the original question by changing the conjugated verb enhanced to the non-conjugated verb enhancing.

[[snippet]]

Incorrect.

This answer choice repeats the Parallelism mistake in the original question, and it creates a new mistake.

The first and second items in the sentence's list are non-conjugated verbs (becoming, breaking), but the third item is clause (it caused the enhancement of).

[[snippet]]

In addition, by adding the pronoun it, the corrected sentence creates a Pronoun Ambiguity mistake. As the previous part of the sentence has several singular nouns (e.g., decade, history, number), it is not clear what it refers to. 

What helps us identify Pronoun mistakes is the following Stop Sign:

Every pronoun in the underlined part of the sentence or after it

Incorrect.

This answer choice repeats the Parallelism mistake in the original question, and it creates a new mistake.

The first and second items in the sentence's list are non-conjugated verbs (becoming, breaking), but the third item is a clause (it enhanced).

[[snippet]]

In addition, by adding the pronoun it, the corrected sentence creates a Pronoun Ambiguity mistake. Since the first part of the sentence has several singular nouns (e.g., decade, history, number), it is not clear what it refers to.

What helps us identify Pronoun mistakes is the following Stop Sign:

Every pronoun in the underlined part of the sentence or after it

Incorrect.

This answer choice is grammatically incorrect. The first and second items in the sentence's list are non-conjugated verbs (becoming, breaking), but the third item is a conjugated verb (were enhancing).

[[snippet]]
enhanced
enhancing
it caused the enhancement of
it enhanced
were enhancing