Fill in the blank in the sentence below

The options are
A. Be
B. Are
C. Am
D. Is

The mountains of Colorado blank my next vacation destination

The mountains of Colorado are my next vacation destination.

The mountains of Colorado are my next vacation destination.

To determine the correct answer, you need to consider the subject "mountains of Colorado" and the verb agreement. In this case, you want to use the correct form of the verb "to be" that matches with the subject.

Since the subject "mountains of Colorado" is plural, you should use the plural form of the verb "to be," which is "are." Therefore, the correct answer is B. "Are."

Therefore, the sentence should be: "The mountains of Colorado are my next vacation destination."