What is a significant characteristic of open-ended questions?

Open-ended questions are designed to promote more in-depth and detailed responses from clients, allowing them to express their thoughts, feelings, and experiences more fully. This characteristic encourages a conversational dialogue rather than a simple exchange of factual information. When clients are asked open-ended questions, they feel more invited to share their perspectives, which can lead to deeper insights and understanding during counseling sessions.

The other options do not accurately reflect the nature of open-ended questions. For instance, open-ended questions explicitly aim to avoid simple "yes" or "no" responses, encouraging expansive dialogue instead. While some may find close-ended questions easier to answer due to their simplicity, this does not align with the purpose of open-ended ones, which seek to challenge clients to articulate their thoughts and feelings. Lastly, open-ended questions inherently enhance the client's ability to express feelings, making option D incorrect as well.