Answer:
A an interaction between organisms
Step-by-step explanation:
Symbiosis is an interaction between two or more organisms. It is a biological interaction which can be mutualism, commensalism or parasitic.
- Mutualism is a form of interaction between two organisms where they both derive benefit from one another.
- Commensalism is an interaction in which one organism derives benefit and the other is neutral.
- Parasitic is an interaction where an organism derives benefit from the other in which the other is harmed.
Symbiosis simply entails the interactions between organisms.