What does it mean to "placate"?

To "placate" means to appease or calm someone, typically in a situation where they are upset or agitated. The term encompasses the action of making someone less angry or hostile by offering concessions or comforting words. This aligns with the concept of soothing emotional distress or dissatisfaction, thus restoring peace in a relationship or situation.

In contrast, the other choices suggest actions that involve increasing tension or conflict, such as excitement, ignition, or aggravation, which do not relate to the calming or soothing connotation of "placate." Therefore, to appropriately address someone’s concerns or emotions effectively, one would engage in placation rather than actions that could escalate problems.