Which choice best illustrates a simple sentence?

A simple sentence is defined as a sentence that contains a subject and a predicate and expresses a complete thought. The choice that best represents a simple sentence is one that consists of a single independent clause without any dependent clauses or additional conjunctions.

In this case, the sentence "He enjoys playing soccer" fits the definition perfectly. It has a clear subject, "He," and a predicate, "enjoys playing soccer," which together express a complete thought without any added complexity or additional clauses. This simplicity is the essence of a simple sentence, making it the best illustration of this concept among the options provided.