Which of the following is a critical practice when handling flammable liquids?

Storing flammable liquids in approved containers and away from heat sources is essential for ensuring safety in environments where these substances are present. Approved containers are specifically designed to minimize the risk of leaks, spills, and chemical reactions that could lead to fire hazards. These containers often have features such as secure lids and venting systems that reduce the likelihood of vapor buildup, which can ignite when exposed to heat or flames.

Furthermore, keeping flammable liquids away from heat sources prevents the possibility of combustion. Heat can significantly increase the volatility of these liquids, making them more prone to ignite. By adhering to this critical practice, you help protect yourself and others from fire risks and ensure compliance with safety regulations that govern the storage and handling of hazardous materials.