While performing an assessment, the nurse presses the client's arm with the tip of her thumb, holds for a few seconds, and releases. The nurse observes the client as shown. What is the nurse assessing?

A. Pitting edema: Pressing on the skin and observing how it rebounds (if it leaves an indentation) is used to assess for pitting edema, which indicates fluid retention in the tissues. B. Capillary refill: This test involves pressing on the nail beds and observing the time it takes for color to return, not pressing on the arm. C. Skin temperature: This is assessed by palpating the skin, not by pressing with the thumb. D. Peripheral pulses: This involves palpating pulse points to assess their presence and strength, not pressing on the arm to check for edema.