In caring for a client following a below-the-knee amputation, which task is best for the practical nurse (PN) to assign to the unlicensed assistive personnel (UAP) who is assisting with the care of this client?

Review the client's vital signs for indications of infection.

Reassure the client that phantom limb pain is genuine pain.

Observe and mark the amount of drainage on the dressing.

Empty and measure the drainage in the suction drainage device.