Which sentence contains a compound subject?

a. small towns like oak grove still prosper.

b. a tornado can level a small town.

c. economic downfall is a hazard small towns face.

d. the economy or the weather can make a small town fall apart.

D. The economy or the weather can make a small town fall apart.

Explanation:

A compound subject is a subject consisting of two or more nouns. When a sentence has a compound subject, the nouns are often joined by a comma or by coordinating conjunction like or, nor, and or neither. In sentence D, "The economy or the weather" is a compound subject because both nouns act as subjects (They perfom the main action), and they are joined by "or."

a. inform

explanation:

"how to" tells us that it will explain how to, which means to inform

i believe it may be the hope this sorry if i'm wrong.