Solution:
Option B is the correct option. "Museums" is a common noun. The name of all things, places, animals, and things is known as a Common Noun. A noun is the name of any animal, place, person, or thing. A common noun is a generic name like apple, orange, girl, buildings, etc. A common noun is not capitalised no matter where it is placed in a sentence. A common Noun is the generalised version of a Proper noun.