What does "gratuitous" imply about an action?

The term "gratuitous" generally describes something that is done without cause or unnecessary, often implying that it lacks a good reason. In this context, when describing an action as gratuitous, it suggests that the action is superfluous or unwarranted, lacking justification or purpose.

For example, a gratuitous remark in a conversation might be an unnecessary insult that adds no value to the discussion. This understanding aligns directly with the correct choice, which emphasizes that the action is done without a good reason. Thus, when evaluating the implications of "gratuitous," it highlights the lack of justification or motive behind the action, reinforcing its meaning in various contexts.