The correct answer is D. Did the speaker support each main idea with appropriate details?
Step-by-step explanation:
The process of evaluating a speech, text or any other material mainly implies analyzing the ideas, details, and organization of them and determining whether these contribute to the general idea or main point of the material and allow the author or speaker to achieve the main purpose of the material. This implies, when analyzing a speech the most important is to understand the general purpose and main ideas of it and whether these elements are appropriate explained and supported with details or evidence and therefore the question that would help you to evaluate a speech is "Did the speaker support each main idea with appropriate details?" as this question allows you to understand whether the speech was effective or not by analyzing the general structure of it and development of the main idea.