Answer:
#1 Gender is not fixed and can change over time.
Explanation:
#1 Gender identity is how a person sees themselves. It is their own internal sense and personal experience of gender. Gender expression includes all the ways a person communicates their gender based on societal factors such as gender norms and perceptions.
I don't know the next one I'm sorry
You can strengthen your lungs by running and painting
I think the best choice would be to think about the good feelings he has. The more he think about being stressed and sad, the more those feelings would increase and take up his whole emotions. Thinking of good feelings would surely help him lighten up the load he is feeling.