Final answer:
Tendinitis is a connective tissue disease that can develop in active individuals who perform repetitive movements. A teenage girl who swims is most likely to develop a connective tissue disease.
Step-by-step explanation:
Tendinitis is a connective tissue disease that can develop in active individuals of all ages who perform repetitive movements constantly. It occurs when overuse of a joint causes microtrauma and initiates an inflammatory response. Examples of tendinitis include tennis elbow, golfer's elbow, jumper's knee, and swimmer's shoulder.
The patient most likely to develop a connective tissue disease in the given options is a teenage girl who swims. Swimmers often perform repetitive motions that can strain tendons and lead to tendinitis, making her more susceptible to developing a connective tissue disease.