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Sentence Correction: Parallelism Questions - Overview

At the depths of the earth's oceans lie habitats teeming with creatures, plants and containing microbes that have yet to be discovered by science.

This answer choice is grammatically incorrect. The first two items in the list of the sentence are nouns (creatures, plants), but the last item is a verb (containing). 

In a list of 3 or more items, all the items should be the same part of speech (all nouns, all verbs, or all adjectives).

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

A list of 3 items or more, separated by commas and and/or before the last item.

Although this answer choice corrects the original Parallelism error by making all the items in the list the same part of speech (in this case nouns), it is grammatically incorrect. The plural subject habitats does not agree with the singular 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 Parallelism error by making all the items in the list the same part of speech (in this case nouns), it is grammatically incorrect. The plural subject habitats does not agree with the singular verb lies.

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 Parallelism error by making all the items in the list the same part of speech (in this case nouns), it is stylistically flawed. The term teeming with implies that the habitats are abundant with creatures, plants and microbes. It is therefore redundant to add the word containing since it is unnecessary.

Nice work!

This answer choice corrects the original Parallelism error by making all the items in the list the same part of speech (in this case nouns).

At the depths of the earth's oceans lie habitats teeming with creatures, plants and containing microbes that have yet to be discovered by science
Lying at the depths of the earth's oceans are habitats teeming with creatures, plants and microbes that have yet to be discovered by science
Lying at the depths of the earth's oceans is habitats teeming with creatures, plants and microbes yet to be discovered by science
At the depths of the earth's oceans lie habitats teeming with and containing creatures, plants and microbes that have yet to be discovered by science
At the depths of the earth's oceans lies habitats that are teeming with creatures, plants and microbes that have yet to be discovered by science