In anaerobic respiration, acetaldehyde is reduced to form alcohol by utilising $N A D H_{2}$ obtained from

Glycolysis

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Terminal oxidation

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Krebs cycle

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Acetylation

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Solution

The correct option is A Glycolysis
Anaerobic respiration starts with the process of glycolysis. The NADH2 thus formed from glycolysis are used to further oxidise acetaldehyde to form alcohol and CO2. The NAD formed are then recycled back to be used in glycolysis.
So the answer is 'Glycolysis'.

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