Answer: Option B
Explanation:
There are many different kinds of biological relationship shown by the organism in environment. The parasitism can be defined as the condition in which one organism lives inside the other living organism. The living organism provides nutrition to the parasite living inside it.
In case of predator prey relation, the predators always kill their prey and feed on them.
The main difference was that in case of parasitism the host is living and in case of predator the prey has to die.