Final answer:
The best response by the nurse would be to explain that examining the area would cause difficulty to the child.
Step-by-step explanation:
The best response by the nurse would be: "Examining the area would cause difficulty to the child."
When a child has Wilm's tumor, a specific type of kidney cancer, it is important to avoid palpating or touching the abdomen. Palpation can potentially cause the tumor to rupture, which can lead to complications and further spread of cancerous cells.
By placing a sign above the bed that says "DO NOT PALPATE THE ABDOMEN," healthcare providers ensure that everyone involved in the child's care is aware of the need to avoid touching the abdomen and prevent any potential harm.