Which statement describes the canning preservation method?

• A. Uses heat to kill bacteria
• B. Freezes to preserve
• C. Removes moisture
• D. Adds sugar to preserve

Answer: (A)

Canning relies on heat processing to destroy microorganisms and create a sealed, sterile environment inside the jar. Heating to high temperatures kills bacteria, yeasts, and molds and inactivates enzymes, while the sealed container prevents contamination after processing, making the food shelf-stable for long periods. That is why describing canning as using heat to kill bacteria is the best answer.

Freezing preserves by turning water to ice and slowing microbial activity, not through the canning heat process. Removing moisture describes dehydration, a different method. Adding sugar to preserve works via osmotic effects and is another preservation approach, not the canning method.