Question

find the error with subject - verb agreement. select the incorrect verb and type it correctly.
the jar of marbles are on the top shelf between the crafts box and the dominoes. youll need a stepladder to reach it.

Explanation:

In the sentence "The jar of marbles are on the top shelf...", the subject is "the jar" (singular), so the verb should agree with a singular subject. "Are" is a plural verb, which is incorrect here. The correct verb should be "is" to agree with the singular subject "the jar".

Answer:

are