Clarifying the assignment would be the initial action John should undertake to expand Kerry's duties.
Explanation:
Option A: When new responsibilities are introduced, John must first clarify the nature of these tasks. This approach will help Kerry manage her work efficiently.
Option B: Although feedback is beneficial, it's not the initial step for adding responsibilities.
Option C: Informing others is John's duty, not Kerry's, thus, this option is not valid.
Option D: While accountability is essential, it comes at a later stage.
