Describe two beneficial uses of bacteria.

Two beneficial uses of bacteria include the following:
1. Microbial fermentation helps produce many foods & beverages. Latic acid bacteria are used in producing milk, yogurt, pickles, olives, etc. Bacteria are also involved in making fermentated meats, producing vinegar, chocolate, soy sauce, etc.
2. Bacteria can be genetically modified to produce human vaccines like insulin, which is required for diabetic patients.

The correct answer is c