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?

Answer 1

for subject verb agreement problems it helps to isolate the subjects and their verbs

[1] Tia and Jackie are
[2] They have; they are having
[3] Jackie would prefer; Tia is
[4] they decides

any ideas which one *doesn't* have sv agreement? as a reminder a plural subject needs a singular verb, and singular subject needs a plural verb