Question

read the paragraph
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?
sentence 1
sentence 2
sentence 3
sentence 4

Explanation:

In sentence 4, the subject "they" is plural, but the verb "decides" is in the singular form. It should be "decide".

Answer:

D. sentence 4