A nurse is caring for a client who has osteoarthritis and received an oral dose of pain medication 1 hr ago. When evaluating the effectiveness of the pain medication, which of the following questions should the nurse ask?
a. "Do you feel like having a bath now?"
b. "Does it still hurt when you move your legs?"
c. "It's been 1 hour, do you need more pain medicine?"
d. "Can you rate your pain on a scale of 0 to 107"