Not allowing dried foods to absorb moisture.

• A. Keeping dried foods dry
• B. Rehydrating dried foods in water
• C. Storing dried foods in a humid environment
• D. Not allowing dried foods to absorb moisture

Answer: (D)

Moisture control is the key to preserving dried foods. When foods are dried, their water content is reduced to slow or stop the growth of microbes. If those dried foods absorb moisture from the air, their water activity rises, creating a favorable environment for bacteria, yeasts, and molds to grow. That leads to spoilage, off‑flavours, and texture changes, and it shortens shelf life. So the best practice is to keep dried foods from absorbing moisture—store them in a cool, dry place, ideally in airtight containers to maintain low moisture levels.

Rehydrating foods introduces moisture back into them, which is useful before cooking but unsafe for long-term storage because it raises water activity. Storing in a humid environment directly adds moisture and accelerates spoilage. Keeping dried foods dry is essentially the same idea, but the statement focusing on not absorbing moisture clearly communicates the protective action.