Few would argue that the problem to put an economy as complex as ours on the path of sustained growth is replete with umpteen challenges, but the country has no dearth of able men to lead the nation to prosperity, the moot point being the political will to address core issues involved.

In the passage, the author acknowledges that achieving sustained economic growth in a complex economy is fraught with challenges. However, he highlights that the country has no shortage of capable individuals who can lead the nation to prosperity. The critical factor, though, is the political will to address the core issues involved in achieving this growth. Option D best captures these components.

Option A, while it mentions challenges and political will, fails to acknowledge the presence of capable individuals, which is a key point in the text. Option B also suffers from the same issue; moreover, it does not touch upon the need for political will. Similarly, Option C fails to mention two of the points: it ignores the challenges and the role of political will, both of which are central to the passage.