Please help which describes a production interaction?

A. two organisms occupy the same Niche.
B. an organism competes with another.
C. a predator kills and eats his prey.
D up Ray kills and eats his predator​

i would say it is

what in the weirdo : o

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )