Final answer:
To prevent Giardia duodenalis infection in food, use safe water supplies, avoid home-canned food, and opt for pasteurized milk.
Explanation:
The best way to prevent the parasite Giardia duodenalis from infecting food is by:
- Using safe water supplies to avoid contamination
- Not using home-canned food that may not have been processed correctly
- Using pasteurized milk to ensure the elimination of any potential parasites
Learn more about Giardia duodenalis prevention in food here:
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