Core concept: Vocabulary (synonym identification). Answer analysis: 'Courageous' emphasizes bravery in challenging situations. 'Bold' (A) directly matches this meaning. 'Confident' (B) refers to self-assurance, not bravery. 'Timid' (C) is the antonym. 'Creative' (D) is unrelated to bravery. Key distinction: Only 'bold' fully captures the element of risk-taking implied by 'courageous'. Common mistake: Mistaking 'confident' for bravery due to contextual association with performance.