Athletes sometimes complain of oxygen debt, a condition that results when
insufficient oxygen is available to completely break down pyruvic acid. As a result,
the pyruvic acid is converted to:.
a. hydrochloric acid
b. stearic acid
c. lactic acid
d. a strong base.

Option (C)

Explanation:

When an athlete performs a high-intensity exercise, proper oxygen is not provided to the muscles, So the muscles move towards the anaerobic mode of respiration to generate energy. This is known as the lactic acid fermentation process.

In lactic acid fermentation, initially, glucose is partial breakdown into pyruvic acid by undergoing the process of glycolysis. This pyruvic acid is then transformed into lactic acid in the muscles, and this whole process is known as the lactic acid fermentation process. It occurs in the absence of oxygen.

Thus, the correct answer is option (C).

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