The nurse observes an unlicensed assistive personnel (UAP) applying an alcohol-based hand rub while leaving a client's room after taking vital signs. Which action should the nurse take?

Remind the UAP to continue rubbing the hands together until they are dry.

Instruct the UAP to return to the client's room to perform handwashing.

Supervise the UAP in the next client's room to evaluate hand hygiene.

Advise the UAP to wear gloves when obtaining vital signs for all clients.