Which of the following statements about musculoskeletal injuries is true?

a. A sprain is an injury to a joint that involves the stretching or tearing of ligaments.
b. Strains are injuries that occur to ligaments and to the joints to which they are attached.
c. A fracture occurs when a tendon connecting a muscle to a bone is overstretched and becomes injured.
d. A dislocation occurs when a bone that forms part of a joint is broken.

Answer: a