Question

mutualism is

a when two organisms interact and it is beneficial for both of them
b when two organisms interact and one benefits with no harm or benefits to the other
c when two organisms interact and one benefits while one is harmed

Explanation:

Mutualism is a type of symbiotic relationship. In mutualism, both organisms involved gain benefits from the interaction. For example, bees and flowers: bees get nectar (food) from flowers, and flowers get pollinated (help in reproduction) by bees.

Answer:

A. when two organisms interact and it is beneficial for both of them