Final answer:
The minimum safe distance from heat sources is approximately 3 feet or 1 meter.
Step-by-step explanation:
The minimum safe distance items must be kept from heat sources depends on the type of heat source and the specific safety guidelines provided by manufacturers.
However, a general rule of thumb is to keep flammable materials at least 3 feet (or 1 meter) away from heat sources such as fireplaces, space heaters, and baseboards. This distance helps to prevent the risk of fire or heat damage to the materials.