Which option is a strategy to ensure operating below the flash point of a liquid?

Lowering the operating temperature is a viable strategy to ensure that operations remain below the flash point of a liquid. The flash point is defined as the lowest temperature at which a liquid can emit enough vapor to form an ignitable mixture with air. By reducing the temperature of the liquid in question, you decrease the amount of vapor produced, thereby ensuring that the environment does not reach the ignition threshold.

This is particularly important in environments where flammable liquids are being handled or processed. Maintaining temperatures below the flash point minimizes the risk of fire or explosion, contributing to safer operational conditions.

While other options may relate to the physical properties of the liquid or the conditions under which it is stored or tested, they do not directly contribute to staying below the flash point in the same manner as lowering the temperature does.