Question

Which of the following is not a type of sentence ? A. Complex B.Simple compound C. Compound complex D Simple

Answer 1

B. Simple compound... there is a simple and a compound sentence but there is no such thing as a simple compound sentence.

Answer 2

The correct answer is B. simple compound.
A compound sentence contains at least two independent clauses, and a simple sentence contains only one, so obviously these two terms are clashing. Complex, compound-complex, compound, and simple sentences all exist.