Final answer:
Rubber or plastic-headed hammers are the safest option, as they provide a cushioned impact and reduce the risk of injury.
Step-by-step explanation:
The safest hammers are those with heads that are made from rubber or plastic. These materials provide a cushioned impact, reducing the risk of injury when using the hammer. Rubber or plastic-headed hammers are commonly used in construction, woodworking, and other applications where there is a need to minimize the chance of causing damage or injury.