I believe List B lists causes of depression, although there are many causes of depression out there. B seems to be the best option though.
Banana=will turn brown and mushy first and then probably a week before it molds
Milk=it will last about three days after its due date expires and then it will harden and start to mold
Cheese=a week or two even in fridge
Bread= if it's sealed well you will have it for 1-3 weeks if it's not sealed it will harden and most likely not mold.
Depression occurs for many reasons, Often it is caused by grief of losing a relative, or it could due to stress. Depression is not just feeling down, it is a chemical and hormonal unbalance. Depression can also be caused by medication or medication change, genetics, and illness. I hope this helps:)