Which additive category does sorbic acid belong to, and what is a typical functional use?

• A. Thickener/stabilizer — used to gel fruit fillings in pies
• B. Flavor enhancer — used to boost sweetness without contributing calories
• C. Bleaching agent — used primarily to whiten flours before baking
• D. Antimicrobial/preservative — used to inhibit yeasts and molds in baked goods and cheeses

Answer: (D)