Which of the following is an essential fatty acid?

A) Lecithin
B) Linoleic acid
C) Stearic acid
D) Butyric acid
E) Hydrochloric acid

Essential Fatty Acid

Fatty acids that the body cannot synthesize on its own and must be obtained through diet, important for various biological functions.

Linoleic Acid

Linoleic Acid is an essential fatty acid belonging to the omega-6 family, necessary for human health but cannot be synthesized by the body, thus must be obtained from the diet.