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The reason a finished, properly acidified pickle resists spoilage is that

  • A.All microorganisms have been destroyed by the acid
  • B.The fruit has become impermeable to any further brine
  • C.Little sugar remains and the pH is too low for most organisms
  • D.The salt concentration has risen far above saturation

Answer: C

Correct answer: Little sugar remains and the pH is too low for most organisms

Two barriers act together: the acidity prevents growth, and the absence of fermentable sugar leaves nothing to grow on. The organisms are not all destroyed - many survive in a dormant state - and the salt is nowhere near saturation, so those explanations are wrong.

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