Bioethanol can be produced through the fermentation of ----------and ---------componentsa.methanol and starchb.sugar and milkc.sugar and starchd.milk and starch

The correct answer is c. sugar and starch.

Step 1: Understanding the question The question is asking about the components used in the production of bioethanol through fermentation.

Step 2: Understanding the options a. Methanol and starch: Methanol is not a fermentable substance, so it can't be used in the fermentation process to produce bioethanol. b. Sugar and milk: Milk is not typically used in the production of bioethanol. c. Sugar and starch: Both sugar and starch are fermentable substances, and they are commonly used in the production of bioethanol. d. Milk and starch: As mentioned before, milk is not typically used in the production of bioethanol.

Step 3: Choosing the correct answer Based on the information above, the correct answer is c. sugar and starch. These are the components that can be fermented to produce bioethanol.