OK so basically the best time to stretch would be before the warm up because if you do not stretch properly you can hurt yourself. So the best option will be B.
Answer:
Vacuole
Explanation:
I just did this and its a vacuole because in every model the vacuole of a plant cell is bigger than the nucleus, and it empty for storage, like a balloon. Hope this helps!
The answer would be B.often times depending on the exercise you would need a spotter
