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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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