I believe the answer is B
Bones are hard because they are made up of bone marrow and muscles are soft because they are muscles
Well if they are a slight unconscious then you ask simple questions like. whats the date? do you know your name? things like that but if they are full blown out and can not move talk or anything else then you get help and ask for someone to call 911
Most of these I would advise you not to handle food with, but the most seriousness of these diseases is Typhoid Fever. Typhoid Fever is obtained by food an infectious person handles. The answer is C.