شبکه واژگان: 선택적

A firm decision or conclusion reached after consideration. It involves choosing a course of action.

To pick out one or more people or things from several possibilities. It involves making a decision based on preference or judgment.

Necessity; something that is required or indispensable.

The act of picking one option among several possibilities. In academic contexts, it refers to consumer choice, policy selection, or research methodology decisions.