Final answer:
The safest method for re-capping a needle is to use a needle recapper or a needle safety device. These devices are specifically designed to securely cap needles and prevent accidental needlesticks.
Step-by-step explanation:
The safest method for re-capping a needle is to use a needle recapper or a needle safety device. These devices are specifically designed to securely cap needles and prevent accidental needlesticks. Simply place the needle into the recapper or safety device and push down until the needle is fully capped. This method ensures maximum safety and reduces the risk of needlestick injuries and contamination.