Which statement about dry chemical agents is correct?

Dry chemical agents are typically designed to extinguish fires by interrupting the chemical reaction of combustion. One of their advantages is that many dry chemical agents are effective in a wide range of temperatures and do not typically freeze at normal operating temperatures, unlike some other agents that are liquid-based or water-soluble.

In the context of fire response, the capability of dry chemical agents to remain effective without freezing is crucial, especially in colder climates where temperatures can fall below freezing. This characteristic allows for reliable use when responding to fires in various environmental conditions.

In contrast, while some dry chemical agents may be corrosive to certain materials, they are not classified as "highly corrosive," making that statement incorrect. Options related to residue depend on the specific type of dry chemical, but many do leave some residue after use, which can be an important consideration for cleanup and potential damage to electronic equipment or sensitive materials. Thus, asserting they leave a residue isn't universally correct for all dry chemical agents.