Which of the following uses only active voice in a complete sentence? Group of answer choices Managers were told about the unhappy customers who criticized the company's rigid return policy. Because a few unhappy customers criticized the company's rigid return policy. The company's rigid return policy was criticized by a few unhappy customers. A few unhappy customers criticized the company's rigid return policy.

A few unhappy customers criticized the company's rigid return policy.

The correct answer is letter D. A few unhappy customers criticized the company's rigid return policy.

Explanation:

This question is comprised of two parts. First, it asks us to find the sentence that uses active voice. In the active voice, the subject is also the agent who performs the action. On the other hand, in the passive voice, the subject is the one receiving the action. Passive voice is characterized by the use of the verb "be" as an auxiliary along with the main verb in the past participle form. That is exactly what we have in letters A and C - - "were told" and "was criticized" - -, so we can eliminate them.

We are left we letters B and D. Let's move on to the second part of the question. We need to find the active voice in a complete sentence. A complete sentence is an independent sentence. It does not depend on another sentence or clause because it expresses a complete thought on its own. We can eliminate letter B, then. It has only one clause that begins with the subordinating conjunction "because". It does not express a complete thought; it actually makes us ask what happened because of the criticism. Therefore, the only possible choice is letter D. It expresses a complete thought on its own and uses active voice: A few unhappy customers criticized the company's rigid return policy.