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    Question

    Jam, jellies, and preserves can be preserved by adding

    sugar at a concentration of:
    A 65% Correct Answer Incorrect Answer
    B 70% Correct Answer Incorrect Answer
    C 40% Correct Answer Incorrect Answer
    D 30% Correct Answer Incorrect Answer

    Solution

    A sugar concentration of at least 65% is required to preserve jams and jellies. This high osmotic pressure inhibits microbial growth by reducing water activity, preventing spoilage.

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