Microsoft guidance for effective prompting emphasizes clarity and context as the two most important factors. Providing context (Option A) ensures that Copilot understands the background, data sources, and constraints relevant to the task. This improves grounding and reduces ambiguity, leading to more accurate and useful responses.

Providing a clear goal (Option D) is equally critical. A well-defined objective—such as summarizing, analyzing, or drafting—helps Copilot determine the correct approach, structure, and level of detail for the response. Without a clear goal, outputs may be generic or misaligned with user expectations.

Using a broad range of instructions can introduce confusion rather than clarity. Acronyms may reduce clarity unless explicitly defined. Keeping prompts generic is discouraged because specificity improves quality and relevance of responses.

Therefore, the correct answers are A (adding context) and D (providing a clear goal) .