Final answer:
The chronic stage of an overuse injury is characterized by pain during physical activity without restricting the client's performance.
Step-by-step explanation:
The correct answer is C) Chronic. The chronic stage of an overuse injury is characterized by pain during physical activity without restricting the client's performance. At this stage, the pain may be persistent and worsen over time. It is important for clients experiencing chronic pain to consult healthcare professionals for appropriate treatment and management.