When a person is dehydrated, you can notice a drop in their breathing rate, their stamina, urination decreases, they become less aware, and their overall energy level decreases.
I believe the answer is Diabetes
Answer C is a good example for that because when starting a school club you mainly will be focusing on that and most likely won't have time to drink or hang out with drinkers.
Answer:
○Plan for what to do if in a difficult situation