Answer:
Dave's best response to the Director of Operations' question is option D:
Explanation:
D) Dave should ask that a responsibility accounting performance report be generated to determine whether the large unfavorable budget variances were within his control before proceeding with the discussion.
This response is appropriate because it shows that Dave is willing to analyze the details and understand if the unfavorable variances were within his control or caused by external factors. It demonstrates accountability and a data-driven approach to addressing the issue, which is crucial for effective management. The other options do not directly address the Director's concern about why direct costs exceeded the budget.