<prompt> Not an essential fatty acid -Linoieic acidLinolenic acidOleic acidArachidonic acid  <response>: Ans. is c i.e., Oleic acid Essential fatty acids EFAso EAFs are those that cannot be synthesized by humans,o They can be derived only from food.o Examples - Linoleic acid, Linolenic acid, arachidonic acid, Eichosa-pentaenoic acid.o The most important EFA is linoleic acid which serves as a basis for the production of other EFAs, i.e. linolenic acid and arachidonic acid. 