The process by which yeast turns carbohydrates into ethanol and carbon dioxide is ____________________________.AFermentationBOxidationCProofingDFusion

The process by which yeast turns carbohydrates into ethanol and carbon dioxide is called Fermentation.

Explanation:

Fermentation is a metabolic process that converts sugar to acids, gases, or alcohol in the absence of oxygen. In the case of yeast, it primarily converts carbohydrates (sugars) into ethanol and carbon dioxide, a process commonly employed in brewing and baking.

The other options are:

• Oxidation refers to the reaction where a substance loses electrons, typically involving oxygen.
• Proofing is a term used in baking to refer to the final rise of dough before baking.
• Diffusion is the process of molecules spreading from areas of high concentration to areas of low concentration.

Thus, the correct answer is A) Fermentation.