What is a characteristic of a 1st degree burn?

A first-degree burn is characterized by damage that only affects the outer layer of the skin, known as the epidermis. This type of burn results in red, dry skin that is warm to the touch. Although the area may be painful, it does not typically result in peeling or blisters that are present in more severe burns. The redness is a direct response to inflammation and increased blood flow to the area as the body attempts to heal the skin.

The other characteristics mentioned in the other choices reflect more severe burn types. For instance, charred skin indicates a third-degree burn where all layers of the skin are destroyed. Painful blisters would typically be associated with a second-degree burn, indicating deeper skin damage. A metallic odor is not a characteristic associated with any specific burn type but could relate to other medical conditions or injuries.