Which sentence has correct subject - verb agreement
a) casey or robbie are coming to the movies with us
b) swimming and skiing is my favorite sports
c) sandwhiches or pizza both sounds good for a quick dinner**
d) either your brother or his friend is making a lot of noise upstairs
I think that D is correct. The either-or-construction takes a singular verb.
C would be correct if "both" were omitted.
All the other sentences have errors, too.
What is the answer please
The correct sentence with subject-verb agreement is:
d) either your brother or his friend is making a lot of noise upstairs.
To determine the correct subject-verb agreement, you need to identify the subject of the sentence and make sure the verb agrees with it in number (singular or plural).
In sentence a), the subject is "Casey or Robbie," and the verb "are" does not agree with this subject because "Casey or Robbie" is a compound subject, so it should take a plural verb form: "are" should be changed to "is".
In sentence b), the subject is "swimming and skiing," and the verb "is" does not agree with this subject because "swimming and skiing" is a compound subject, so it should take a plural verb form: "is" should be changed to "are".
In sentence c), the subject is "sandwiches or pizza," and the verb "sounds" does not agree with this subject because "sandwiches or pizza" is a compound subject, so it should take a plural verb form: "sounds" should be changed to "sound".
In sentence d), the subject is "either your brother or his friend," and the verb "is" agrees with this subject because "either your brother or his friend" is a compound subject joined by "or," and the verb should agree with the closest subject to it, which is "his friend" (singular), so the singular verb form "is" is correct.