Answer:
Predation
Step-by-step explanation:
It is a clear case of predation. Predation is a type of relationship between two organisms in which one organism feeds upon another one causing its the death. The one which feeds upon another one is a predator while other one which is killed is a prey. That means in predation one organism is benefited while another one is harmed. Parasitism and predation are somehow related but the difference between both of them is that in predation, one organism is killed by another one but in parasitism the organism which gets benefited does not kill the host because by doing this it can get benefits from the host for a longer time period.
Other options are wrong. Commensalism is a type of relationship in which one organism is benefited while another one is not affected means derives neither benefit nor harm. So, option B is wrong.
Parasitism is a type of association between two organisms in which one is benefited but another one is harmed without being killed. So option C is incorrect.
Mutualism is a type of association between two organisms in which both of them get benefited out of each other. So option D is also incorrect.