Appetite is not linked to hunger since appetite is the activity and drive in order to eat whereas hunger is the physical and mental state in which a person needs to eat.
Also appetite is linked to many unhealthy behaviors that can result to other symptoms of eating disorders which causes deletrious effects on one's mental and biological state.
Definitely D, it will cause you to lean back resulting in a fall
Answer: you might see little block-like structures if you look at any type of cell, if it is a plant cell you were looking at, you would be able to see the cell wall.