Why is "business" the only subject in the following sentence?
a) Because it is the main focus of the sentence and represents the primary topic being discussed.
b) Because it is the noun that the verb "was" directly applies to, indicating the action or state of being.
c) Because it is the only noun in the sentence that is singular and corresponds to a singular verb.
d) Because it is the only noun in the sentence that represents a specific entity or concept rather than a general idea.
