Either the mountains of Colorado or the ocean of Florida _____ my next vacation destination.

Which verb correctly completes this sentence?

A. be

B. is

C. am

D. are

2. Which sentence has proper subject-verb agreement?

A. Missouri and Illinois are states along the Mississippi River.

B. Neither Harper nor Finn are aware of the details.

C. Either you or I are responsible for cleaning the house this afternoon.

D. Hope, peace, and love is achievable for everyone.

3 answers

https://www.grammarbook.com/grammar/subjectVerbAgree.asp#:~:text=A%20singular%20subject%20(she%2C%20Bill,a%20phrase%20beginning%20with%20of.

Read Rule 2.
What's the answer ? I'm just stuck on it
D: are
A: Missouri and Illinois are states along the Mississippi River.