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: Parallelism - not only A but also B

According to the American psychologist Howard Gardner, the concept of intelligence should be divided not only into linguistic and logical sections but also into a number of other sub-categories because there is constant displays of additional human abilities during everyday activities that are unaccounted for.

This answer choice is grammatically incorrect. The plural subject constant displays of additional human abilities does not agree with the singular verb is. Once the verb is located, it is important to ask what the subject of that verb is.

What helps us identify this question as a Subject Verb Agreement question and identify the mistake is the following Stop Sign

The verb precedes the subject  

Although this answer choice corrects the original Subject Verb Agreement error by matching the plural verb are with the plural subject constant displays of additional human abilities, it is grammatically incorrect. The same part of speech that follows not only must also follow but also. In this answer choice, not only is followed by the verb be divided. But also, however, is followed by the noun number.

What helps us identify this question as a Parallelism question as well as identify the mistake is the following Stop Sign:

not only... but also...

Although this answer choice corrects the original Subject Verb Agreement error by matching the plural verb are with the plural subject constant displays of additional human abilities, it is grammatically incorrect. In the GMAT, not only must be complemented by but also, not just but

What helps us identify this question as a Parallelism question as well as identify the mistake is the following Stop Sign:

not only... but also...

Although this answer choice corrects the original Subject Verb Agreement error by matching the plural verb are with the plural subject constant displays of additional human abilities, it is grammatically incorrect. In the GMAT, but also should be preceded by not only

What helps us identify this question as a Parallelism question as well as identify the mistake is the following Stop Sign:

not only... but also...

Extremely well done!

This answer choice corrects the original Subject Verb Agreement error by matching the plural verb are with the plural subject constant displays of additional human abilities. It also maintains Parallelism while using the not only...but also... structure.

be divided not only into linguistic and logical sections but also into a number of other sub-categories because there is
not only be divided into linguistic and logical sections but also a number of other sub-categories because there are
be divided into linguistic and logical sections but also into a number of other sub-categories because there are
be divided not only into linguistic and logical sections but into a number of other sub-categories because there are
be divided not only into linguistic and logical sections but also into a number of other sub-categories as there are