The correct answer is D. The first sentence uses passive voice but would be better written in active voice.
Explanation:
In the English language, there are mainly two types of grammatical voices: active and passive. In passive voice, the sentence begins with the object while the subject has less emphasis or is not even presented, while in the active voice the sentence begins with the subject and this is the emphasis of the sentence. Additionally, active voice is often preferred than passive voice excerpt if the object is more important.
In the case of the sentence presented, the first sentence is in the passive voice "A new gift shop was opened by the Millers who needed to learn many things about running it so the business would be successful" as the emphasis is the object. However, as the emphasis should be the Millers who were the ones in charge of the shop, this sentence would be better in the active voice or "The Millers opened a new gift shop...". On the other hand, the second sentence is in active voice and this is suitable in this context. Therefore, the statement that describes the problematic use of active and passive voice is "The first sentence uses passive voice, but would be better written in active voice".
