Question

[1] Tia and Jackie are partners in science class. [2] They have a big project to complete and are having trouble agreeing on an idea. [3] Jackie would prefer to study geology, but Tia is more interested in human biology. [4] Ultimately, they decides to study fossilization. Which sentence has a subject-verb agreement error?

Answer 1

[4] Ultimately, they decides to study fossilization.
They and decides don't agree in their form. They is a plural form of a subject, and it should take the plural form of the verb. Decides is in the singular form so to make the sentence correct, decides should be changed to decide.

Answer 2

The sentence that has a subject-verb agreement error is:

"Ultimately, they decides to study fossilization." (Option D)

What is the error in the sentence above?

The error in the above sentence is that the verb "decides" is written in the wrong tense form, hence it doesn't agree with the subject.

The correct form of the sentence is:

"Ultimately, they decided to study fossilization."

Learn more about Subject - Verb Agreement at:
https://brainly.com/question/26178998
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