Write a correct answer for the question. You should reason about prototypical situations and provide the correct answer. Avoid answers that provide incomplete justification for the question.

Let me give you an example: at the beach, name something that might protect you from sun.
The answer to this example can be: umbrella
Here is why: Umbrella can serve as a shield to block the sun

OK. solve this:
name something you jump on.
Answer:
trampoline