If you want X, then you ought to do Y" is the general form of a hypothetical imperative.

a. True.

b. False.

The answer is a. True.

Explanation:

The general form of hypothetical imperatives implies that if you want to achieve something (like a goal), then you have to take some particular action or actions; for example, if you want to pass your exams, then you have to read what you have been taught: you must do one or a number of things in order to achieve one or a number of other things.