Have the courage of one's convictions means to act according to one's beliefs despite pressure. The correct answer is this meaning because the expression is used figuratively, not only by its literal words.

Examples:

• A good citizen should have the courage of their convictions.
• In an HSC essay, Have the courage of one's convictions can express this meaning: to act according to one's beliefs despite pressure.
• When this expression appears in a passage, connect Have the courage of one's convictions with the idea of to act according to one's beliefs despite pressure.