Final answer:
A hypothetical imperative is an action that is good for a specific purpose or goal. An example of a hypothetical imperative is the command 'study hard' to achieve good grades.
Step-by-step explanation:
A hypothetical imperative, according to Immanuel Kant, is an action that is good only in relation to achieving a specific goal or purpose. In other words, it provides subjective rules for acting in order to fulfill a desire. For example, the command 'study hard' is a hypothetical imperative because it is good for the purpose of getting good grades.