Final answer:
The appropriate nursing intervention is to ensure that the patient's call light is within reach to provide assistance due to the sedative effects of CNS depressants, such as increased risk of falls and need for assistance.
Step-by-step explanation:
An appropriate nursing intervention for patients who are receiving CNS depressants is to ensure the patient has access to assistance when needed. This is because CNS depressants can cause sedation, somnolence, and motor disturbances. This can affect the patient's balance and coordination, increasing the risk of falls and other accidents.
Therefore, the correct option would be d. Make sure the patient's call light is close by in case of the need for assistance with activities. This allows the patient to easily signal for help, thus ensuring their safety while they are under the influence of medications such as benzodiazepines, barbiturates, or other muscle relaxants.