Final answer:
When administering an acetaminophen suppository to a child, it should be inserted into the rectum no more than 2 centimeters to ensure effective absorption and minimize discomfort.
Step-by-step explanation:
The accurate administration of an acetaminophen suppository to a child requires that it is inserted into the rectum correctly. For children, the suppository should generally be inserted a distance of no more than 2 centimeters (cm). This ensures that the medication is placed where its absorption can occur effectively and also minimizes discomfort during the process.
It's important that this administration is done gently and safely, following all the recommended guidelines to ensure the child's well-being while the medication is being given.