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What part of the hair, if damaged, prevents it from growing back?

  1. Cuticle

  2. Follicle

  3. Medulla

  4. Papilla

The correct answer is: Cuticle

The correct answer is the Cuticle. The cuticle is the outermost layer of the hair shaft that protects the inner layers of the hair. If the cuticle is damaged, it can prevent the hair from growing back properly or at all. The follicle, medulla, and papilla are important parts of the hair structure, but it is the cuticle that plays a crucial role in the hair growth process.