<span>C. To provide a moral lesson (apex)</span>
The reader has to take part in discovering the meaning of the work.
Answer:
(D) The verb should be are because a compound subject joined by and always requires a plural form of the verb.
Explanation:
A compound subject consists of two or more simple subjects that share a verb or verb phrase. These subjects are joined by a conjunction such as and, or, or nor, etc.
Since the two objects mentioned ( i.e window fans and air conditioner) are two different objects that cannot be combined to be one, the sentence is a plural compound sentence and not a singular compound sentence. "Are" is the appropriate conjunction to use.