The answer is D. A verb that starts with "to" is in an infinitive verb form. It should be noted that a verb in this form does not function as a verb instead it functions as another part of speech. Infinitives can function as adverbs, adjectives or as nouns.
Answer: A simple sentence has just one clause.
A compound sentence joins simple sentences together, using words like and, but or so.
A complex sentence joins clauses together using words like after, because, who, where and whenever.
Explanation:
this?
