The end product of anoxic respiration is

The end product of anoxic respiration is [C] Lactic acid. Anoxic respiration, also known as anaerobic respiration, occurs in the absence of oxygen. In this process, pyruvic acid, produced during glycolysis, is converted into lactic acid through fermentation. This reaction helps to regenerate NAD+ from NADH, allowing glycolysis to continue in the absence of oxygen. Lactic acid fermentation is common in certain microorganisms and in human muscle cells during intense exercise when oxygen supply is limited. Unlike aerobic respiration, which produces carbon dioxide and water as end products, anoxic respiration leads to the accumulation of lactic acid. Lactic acid can contribute to muscle fatigue and soreness but can also be utilized as a source of energy by certain organisms and tissues under anaerobic conditions.