1 is D. 2 is A. 3 is B. 4 is B.
Appetite is not linked to (B) physiological hunger.
Where physiological hunger is linked to the need for food, appetite is mostly related to the desire for food.
Honestly just search it up theirs this website called coursehelper or something like that which has like all teachers answer sheets where they get their work from might work
I think it's The writer's beliefs