Answer:
Time and Location: Location and the proximity of the time is important in discerning whether the food is hygenic enough to eat. For example, you may not want food that was bred and shipped from Chernobyl following the Chernobyl nuclear accident.
On a more positive side, if you are looking towards food that may be organic, you may want to double check to see if whether or not the product is true to what it advertises for. This means checking the farm or organization (or where the food is coming from).
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