What does a closed container prevent during storage or handling?

A closed container is particularly designed to prevent the escape of liquid, vapor, or dusts during storage or handling. This is paramount in maintaining safety, as many substances can be hazardous when released into the environment, causing potential health risks through inhalation or contact. By keeping the contents sealed, the closed container mitigates the risk of spills and contamination, as well as protects volatile substances from evaporating or reacting with the external environment.

While other options might seem relevant, they do not directly pertain to the primary function of a closed container. For example, while closed containers may limit light exposure to some extent, they are not specifically designed for that purpose. Access by unauthorized personnel is managed through security measures rather than the physical characteristics of a closed container. Similarly, temperature fluctuations can occur even in closed containers unless they are specially designed for thermal stability. Therefore, the main function remains focused on preventing the escape of hazardous materials.