Which protein protects the epithelial cells from damage?

Keratin

The correct answer is Option (1) -Keratin

The protein that primarily protects epithelial cells from damage is: Keratin

Keratin is a structural protein that forms the main structural component of epithelial tissues such as skin, hair, and nails. It provides strength, resilience, and protection to these tissues, helping to prevent damage from mechanical stress, abrasion, and environmental factors. Keratin forms tough, insoluble fibers that help to maintain the integrity and barrier function of epithelial cells, thereby protecting them from damage and maintaining tissue structure.