Final answer:
The question from the options that best reflects the strategic goals of project portfolio management asks if the investment is being made in the right areas, aligning with the organization's strategic objectives.
Step-by-step explanation:
The strategic goals of project portfolio management are primarily focused on overarching business objectives rather than just the minutiae of project execution. As such, the question that reflects this best is: c. Are we investing in the right areas? This question is concerned with aligning projects with the strategic direction and priorities of the organization, thereby ensuring that the investment yields the intended business benefits. While the other questions listed are relevant to project management, they do not embody the strategic nature of portfolio management quite like the selection of the right projects to invest in.