Answer:
The answer is: a. simple.
Step-by-step explanation:
A simple sentence is one that has a single verb or a verbal periphrasis.
The structure of the sentence is made up of two fundamental elements, which are: subject and predicate. The subject is the part of the sentence that tells us who is being talked about. The predicate is the part that relates to what is said about the subject.
Simple sentences are those that consist of subject and predicate, and refer to a single action or description. The subject is simple, and the predicate describes an action or description of the subject or subjects.
The answer is: a. simple.