The error with the subject-verb agreement is this:
Subject-verb agreement is a situation where the verb used to explain an action is in the same tense and agrees with the subject of the sentence. usually, singular verbs go with plural subjects.
In the case above, "is" is not the right verb because the subject number of should go with the plural "are" form. So, the identified part is incorrect.
Learn more about subject-verb agreement here:
https://brainly.com/question/1416131#SPJ1