A client comes to the clinic due to shoulder discomfort and intermittent pain while swimming laps. To identify normal range of motion (ROM) of the client's shoulder, which assessment technique should the nurse ask the client to perform?

Choice A reason: This assesses arm stability and drift, which is more relevant in neurological exams than shoulder ROM. Choice B reason: Full shoulder flexion involves raising the arms to 180 degrees beside the ears. This movement directly assesses shoulder ROM and is appropriate for musculoskeletal evaluation. Choice C reason: This assesses coordination and cerebellar function, not shoulder ROM. Choice D reason: This evaluates muscle strength against resistance, not the full range of motion of the shoulder joint.