Concept:A biological interaction where one partner benefits and the other is harmed.
Explanation:One organism, called the parasite, lives on or inside another organism, called the host.
The parasite feeds on nutrients from the host’s body.
The host suffers damage or weakness, but it is usually not killed immediately.
This type of association is specifically called parasitism.
It is different from predation, where the predator kills and eats the prey.
Answer:C. parasitism