Which term refers to the act of making someone aware of something?

The term "apprise" specifically means to inform or make someone aware of something. It suggests providing someone with necessary information or updates regarding a situation or event. When you apprise someone, you give them insight or knowledge that they might not have had before, allowing them to understand or respond appropriately to the information shared.

In contrast, the other terms hold different meanings. "Temper" refers to the state of mind or mood, often relating to moderation or control, rather than awareness. "Articulate" means to express something clearly and effectively, but it does not convey the idea of making someone aware of existing information. "Aver" means to assert or affirm with confidence, which also does not align with the concept of informing or making someone aware. Therefore, "apprise" is the most accurate choice for describing the act of informing someone.