Bring into sharp focus means to make something very clear and noticeable. The correct answer is this meaning because the expression is used figuratively, not only by its literal words.

Examples:

• The pandemic brought into sharp focus the need for better healthcare.
• In an HSC essay, Bring into sharp focus can express this meaning: to make something very clear and noticeable.
• When this expression appears in a passage, connect Bring into sharp focus with the idea of to make something very clear and noticeable.