Which of the following is a method to properly store food?

Using airtight containers is an effective method for properly storing food because they help maintain the quality and safety of food items. Airtight containers prevent air from entering, which can slow down the deterioration of food and minimize the risk of contamination from bacteria, mold, and pests. They also help to retain moisture, preventing foods from drying out while keeping odors from spreading. Moreover, using clear containers can make it easier to identify contents and monitor their freshness.

In contrast, leaving food uncovered can lead to contamination from airborne bacteria and pests. Storing food at room temperature is often inappropriate for perishable items, as it can promote bacteria growth. Mixing raw and cooked food significantly increases the risk of cross-contamination, which can lead to foodborne illnesses. Therefore, choosing airtight containers is a key practice in ensuring food is safely and properly stored.