Waste storage containers must be constructed with materials that are?

The correct answer highlights that waste storage containers must be made from durable, nonabsorbent, leak-proof, pest-resistant, and cleanable materials to ensure effective waste management and safety.

Durability is essential because waste containers need to withstand regular handling and environmental factors without deteriorating. Nonabsorbent materials are crucial for preventing the infiltration of liquids, as absorbed fluids can lead to contamination, unpleasant odors, and attract pests. Leak-proof construction is vital to contain any liquids that may be present, preventing spills and maintaining hygiene in the storage area.

Pest resistance is also necessary to deter rodents, insects, and other pests that might be attracted to waste, which can pose health risks and complicate waste management. Finally, the ability to clean the containers effectively ensures that they can be maintained in sanitary conditions, reducing health risks and odorous build-up which contribute to an unsightly and unhygienic environment.

Thus, the combination of these characteristics is pivotal for the safe and efficient storage of waste, making the second option the most appropriate choice.