which question is closed-ended

Question

what year did the renaissance period begin?
how did the renaissance period influence modern art?
which ideas from the renaissance period are still relevant?
what led to the renaissance period?

Answer 1

The closed-ended question is:

What year did the renaissance period begin?

This question can be answered with a specific date or year, making it closed-ended. The other questions invite more elaborate responses and discussion, which makes them open-ended.