20. "The books were strewn on the floor,under the table, by the door, at the back of the classroom." To which sentence type does the above sentence belong? A compound sentence B. simple sentence C. complex sentence D. imperative sentence.

The correct answer is B. simple sentence.<br /><br />A simple sentence consists of a single independent clause with a subject and predicate. In this case, the sentence "The books were strewn on the floor under the table, by the door, at the back of the classroom." is a simple sentence because it has one independent clause with a subject ("The books") and a predicate ("were strewn on the floor under the table, by the door, at the back of the classroom").