In assessing an older adult client, the nurse notes that the client's right arm muscles feel soft and boggy. To gather additional data related to this finding, which assessment should the nurse complete next?

A. Determine degree of skin elasticity: While decreased skin elasticity can be a sign of aging, it doesn't directly assess muscle tone or strength.B. Measure muscle strength: This is the most appropriate next step to confirm the nurse's initial suspicion of weak muscles. Techniques like manual muscle testing can assess muscle strength.C. Inspect appearance of the spine: Spinal issues can affect movement and coordination, but they wouldn't necessarily explain soft and boggy muscles in one arm.D. Note 24-hour fluid intake and output: This might be relevant for overall health assessment but doesn't directly assess muscle tone or strength.