What is the term for the act of making up one’s mind about something?

The term for the act of making up one’s mind about something is "decision." When someone makes a decision, they evaluate their options, weigh the pros and cons, and determine a course of action based on their personal judgment or reasoning. This process can involve careful thought or be more spontaneous, but ultimately, it involves arriving at a conclusion that influences future behavior.

In the context of the choices provided, while "choice," "conclusion," and "verdict" have related meanings, they do not specifically capture the process of reaching a personal resolution as directly as "decision" does. A "choice" is often associated with the options available before a decision is made, while a "conclusion" typically refers to a final remark or summary, and a "verdict" usually relates to a formal decision made by a jury or judge in a legal context. Thus, "decision" is the most accurate term for the act of making up one’s mind.