Lactic acid is a:

Correct option is D

The correct answer is (d) Three-carbon molecule.
· Lactic acid, more commonly known as lactic acid, is a three-carbon molecule.
· The chemical formula for lactic acid is C₃H₆O₃.
· It has a hydroxyl group (OH) and a carboxyl group (COOH) attached to the carbon chain.
· Lactic acid is produced in the body during anaerobic respiration and is commonly found in sour milk products like yogurt and kefir.
Information Booster:
· Two-carbon molecule: Ethanol (C₂H₆O) and acetic acid (C₂H₄O₂) are examples of two-carbon molecules.
· One-carbon molecule: Methanol (CH₃OH) and formic acid (CH₂O₂) are examples of one-carbon molecules.
· Four-carbon molecule: Butyric acid (C₄H₈O₂) is an example of a four-carbon molecule.