Final answer:
The appropriate nursing action would be to comfort and reassure the child.
Step-by-step explanation:
The appropriate nursing action would be to comfort and reassure the child. The child is scared and uncomfortable being in the tent, so it is important for the nurse to provide emotional support and create a sense of safety for the child. The nurse can use distraction techniques such as playing with toys or singing songs to divert the child's attention and help alleviate their fear.