Final answer:
The correct diagnostic statement for the client with an upper extremity injury would be 'Impaired mobility as evidenced by upper extremity injury.'
Step-by-step explanation:
The correct diagnostic statement would be option C) Impaired mobility as evidenced by upper extremity injury.
This statement follows the three-part structure typically used in healthcare facilities. It identifies the problem (impaired mobility), the cause (upper extremity injury), and the evidence (as evidenced by upper extremity injury).
Option A) is incorrect because it does not specify the cause of the impaired mobility. Option B) is incorrect because it does not properly indicate the evidence of impaired mobility. Option D) is incorrect because it suggests that impaired mobility caused the upper extremity injury, which is not the case.