Final answer:
The nurse manager's best response is to move to the 'what if...' stage and explore spin-off ideas.
Step-by-step explanation:
The nurse manager's best response is option D) Let's move to the 'what if...' as related to these objections for an exploration of spin off ideas.
This response acknowledges the nurse's objections but also encourages further brainstorming and exploration of different perspectives. By suggesting to move to the 'what if' stage, the nurse manager can encourage the team to explore alternative solutions and potential spin-off ideas that may address the objections raised.