Final answer:
The nurse asks the client his or her pain level after taking routine vital signs to ensure that pain assessment occurs on a regular basis.
Step-by-step explanation:
The nurse always asks the client his or her pain level after taking routine vital signs to ensure that pain assessment occurs on a regular basis. Pain can be subjective and may vary from person to person, so it is essential to consistently monitor and evaluate the client's pain levels. By regularly assessing pain, the nurse can provide appropriate interventions and ensure effective pain management.