The answer would be D correct me if i'm wrong.
Purpose of a Thesis Statement. A thesis statement is usually the last sentence of the first paragraph of a composition. It states the topic of the paper and the argument the author will make about the topic.
An independent clause and a dependent clause.
An independent clause is a clause that can stand alone as a sentence (i.e., it expresses a complete thought). However, a dependent clause (or subordinate clause) is one that cannot stand alone as a complete sentence because it does not express a complete thought. Cause it is not a complete thought, it is dependent on being attached to an independent clause to form a sentence. The link between a dependent clause and an independent clause will often be a subordinating conjunction or a relative pronoun.
Elephants are very wise and can think similar to how a human can think.