The name of the process of converting sugar into alcohol is :

Correct option is C

The correct answer is (c).
Explanation
Fermentation is the biochemical process in which sugar is converted into alcohol and carbon dioxide by the action of microorganisms such as yeast. This process occurs in the absence of oxygen and is widely used in industries like brewing and baking.
Additional Information
• Option {a} is incorrect because nitrogen fixation involves conversion of atmospheric nitrogen into usable forms. • Option {b} is incorrect because moulding refers to shaping materials, not biochemical conversion. • Option {d} is incorrect because infection refers to invasion of pathogens in a host body.