An interaction between two individuals where one individual is benefited while the other is neither benefited or harmed is called as:
A. Predation
B. Symbiosis
C. Amensalism
D. Commensalism

Hint: Biological communities in the ecosystem are full of species interactions which may be detrimental or beneficial to the interacting species. In total the interactions occurring inside the biotic communities leads to the functionality of an ecosystem. Some of the common interactions are - mutualism, amensalism, commensalism, protocooperation, predation, parasitism etc.

Complete answer:
Option A – In predation one animal which is a carnivore predates i.e., hunts or kills another animal to derive its nutrition. Thus, in this type of interaction one organism who is predator is benefited while the other which is prey is harmed.
Thus, option A is not correct.
Option B – Symbiosis literally means living together and is more generally known as mutualism where both the interacting organisms are mutually benefited. Thus, this interaction does not go in continuum with our question.
Thus, option B is incorrect.
Option C – Amensalism is a type of interaction in which one species is harmed while the other is neither benefited nor harmed. Thus, this interaction does not go in continuum with our question.
Thus, option C is also not correct.
Option D – In commensalism one of the interacting species is benefited while the other is neither harmed nor benefitted. For example, tree frogs use plants as protection where the fogs are benefited but the plants are neither benefited nor harmed.
Thus, Option D is correct.

Hence, Option D. Commensalism is the correct answer.

Note:
An ecological community is described as a set of truly or probably interacting species dwelling withinside the same habitat. A community is sure collectively with the aid of using the community of impacts that species have on one another. Inherent in this view is the perception that anything influencing one species additionally influences many others - the "stability of nature".