Final answer:
The best action for the nurse to take when a client with burns on his groin develops blisters that break while bathing is to clean the area with normal saline solution and cover it with a protective dressing.
Step-by-step explanation:
The best action for the nurse to take when a client with burns on his groin has developed blisters that break while bathing is to clean the area with normal saline solution and cover it with a protective dressing (option d).
By cleaning the area with normal saline solution, the nurse can effectively remove any debris or bacteria that may have entered the broken blisters. This helps to prevent infection and promote wound healing.