Respuesta :
Answer: Option (d) is the correct answer.
Explanation:
A fatty acid is defined as a long chain of hydrocarbons that consists of a carboxylic group, that is, COOH group at the end of the chain.
General formula of a fatty acid is [tex]R-(CH_{2})_{n}-COOH[/tex] where n is mostly an even number in many cases.
Fatty acids are also known as aliphatic monocarboxylic acid.
For example, [tex]C_{17}H_{35}COOH[/tex] is the formula of stearic acid which is a fatty acid.
Thus, we can conclude that a long chain of hydrocarbon bonded to cooh is a fatty acid.
