Final answer:
Questioning is essential to effective informational listening as it demonstrates engagement and aids in understanding, which is especially true in the context of research and historical inquiry.
Step-by-step explanation:
Questioning is indeed considered to be an important aid to effective informational listening, so the correct answer to the question is A. True. Being an active listener includes being engaged in the conversation, which often involves asking clarifying questions or for further details.
This not only shows interest but aids in a deeper understanding of the information presented. In the context of historical inquiry, researchers start with general questions which become increasingly focused as they gain knowledge.
Moreover, asking critical-thinking questions is encouraged as it helps to distinguish between fact and opinion, locate biases, and better understand evidence. Therefore, questioning is paramount in achieving effective informational listening.