I have a Microbiology homework I need help with it it is only 50 multiple chooses questions

Question

I have a Microbiology homework. I need help with it .. it is only 50 multiple chooses questions ..

Choose the best answer
1. A substance naturally produced by certain molds and bacteria that
inhibits growth or kills other microorganisms is defined as a
______________
A.
B.
C.
D.
E. toxin…
Science