The interviewer is hoping to determine how good a fit you would be. They are also again hoping to assess how well you cope with stress, and how honest you are, evaluating the consistency between how you answered the other question. Everyone has fears, and your interviewer is expecting you to have them as well. Admitting your fears, in whatever context, helps them understand your personality, and how your fears might be exploited in an environment such as theirs.

One might have fears of endangerment to themselves or their loved ones, and others have professional fears. Knowing yourself, and delivering your answer with confidence, in a way that reveals you have complete control and balance over your emotions is the aim. The goal is not to come across as fearless, but as having mastery over your own emotions.

Employers value self-awareness and honesty. If you have a fear for your own personal safety, use this as a motivation towards pursuing every option before resorting to physical contact, and portray a grounded and positive attitude when delivering your response. Try to focus on how you control your fear, and that it doesn't control you. Practice delivering your answer in a steady, confident voice. Use confident body language, make eye contact, and maintain good posture.