Which of the following is not true about rhetorical questions?

Rhetorical questions are designed to provoke thought or emphasize a point rather than elicit a direct response from the audience. While they may encourage listeners to reflect on the question, they aren't typically meant to be answered. This aligns with the nature of rhetorical questions as they serve to involve the audience in a deeper consideration of the topic at hand without requiring a verbal response.

In contrast, the other options highlight various functions and characteristics of rhetorical questions. They are indeed effective for engaging an audience, can introduce subjects or themes creatively, and often serve to underscore an argument by framing assertions as questions. By understanding that the primary purpose of rhetorical questions is not to solicit answers but to stimulate thought or highlight a position, it becomes clear why option A is not true.