What is an important rule regarding food storage to prevent spoilage?

Keeping dry goods stored in airtight containers is crucial in preventing moisture contamination, which can lead to spoilage. Moisture can promote the growth of mold and bacteria, which can compromise food safety and quality. Airtight containers help to create a barrier against humidity, ensuring that dry ingredients, such as flour, sugar, and spices, remain fresh and usable for a longer time. This practice not only enhances food longevity but also preserves flavor and texture, making it essential for maintaining quality in a food preparation environment like Panda Express.

The other choices do not support proper food storage principles; for instance, room temperature storage can lead to bacterial growth, and large bins without lids can expose food to air and moisture, while non-ventilated containers for refrigerated items can lead to excess moisture buildup and spoilage.