Final answer:
To confirm peripheral edema in a school-age client, the nurse should perform the D option: Press the nurse's thumb firmly against the client's shin for 5 seconds and observe for an indentation.
Step-by-step explanation:
To confirm peripheral edema in a school-age client, the nurse should perform the D option: Press the nurse's thumb firmly against the client's shin for 5 seconds and observe for an indentation.
Peripheral edema is the accumulation of excess water in the tissues, particularly in the soft tissues of the extremities. Pressing the nurse's thumb against the client's shin can help determine if the edema is present in that area. If an indentation or pit remains after the thumb is removed, it is known as pitting edema, which confirms peripheral edema.