The effect of the author's use of figurative language in this passage primarily emphasizes how important being brave is to the characters in this cultural setting. The old woman's declaration about her readiness to face danger and her encouragement to have courage amidst the storm highlight the value of bravery. Additionally, the reaction of the two young men running away further underscores the weight of fear and the contrasting notions of bravery and cowardice within the story. Thus, the correct answer is:
It emphasizes how important being brave is to characters in this cultural setting.