Under what circumstances is it acceptable to store food and chemicals in the same refrigerator?

Storing food and chemicals in the same refrigerator is typically not acceptable due to safety and health concerns. Chemicals can leak, spill, or off-gas, potentially contaminating food and posing serious health risks if consumed. In laboratory and research settings, maintaining a strict separation between personal materials (like food) and hazardous materials (like chemicals) is essential to prevent accidental exposure and ensure compliance with safety protocols. Therefore, option B accurately reflects the best practices in laboratory safety, reinforcing the need for clear boundaries between these categories to safeguard the health of individuals who may access the refrigerator.

Other options suggest circumstances that might seem practical, such as storing food in sealed containers or having limited refrigerator availability, but they do not address the overarching principle of safety which dictates that food and chemicals should never be mixed in storage environments.