Actually cell can get big but they are smart enough to stay small and live off lots of small food, and there isn't enough food for them to live off of (if this is wrong i apologize)
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.
Pretty sure its scavenger, the others make no sense
I'm pretty sure the answer is D. bile.
Yes suhhhh i gotta get 20 characters in gimme a min