What repetitive stress injury is a factory worker at risk of?
Correct Answer: C
Rationale: Factory workers are at risk of developing Carpal Tunnel Syndrome due to repetitive hand movements involved in their work. This condition occurs when the median nerve, which runs from the forearm into the palm of the hand, becomes pressed or squeezed at the wrist. Plantar fasciitis (choice A) is a condition affecting the foot, not typically associated with factory work. Osteomalacia (choice B) is a softening of the bones due to a lack of vitamin D or calcium, not directly related to repetitive stress in factory work. Osteoporosis (choice D) is a condition characterized by weak and brittle bones, usually associated with aging or hormonal changes rather than repetitive stress injuries.