Which of the following is not an essential fatty acid?

Question

Oleic acid
Linoleic acid
Linolenic acid

Answer 1

Essential fatty acids, or EFAs, are fatty acids that are required in the human diet. This means they cannot be synthesized by the body from other fatty acids and must be obtained from food. There are two closely related families of EFAs: ω-3 (or omega-3 or n-3) and ω-6 (omega 6, n-6.)

Both
Linoleic acid
Linolenic acid
are essential fatty acid.

Oleic acid is NOT an essential fatty acid.

Answer 2

Som is correct.
You can read up on essential fatty acids here:
http://en.wikipedia.org/wiki/Essential_fatty_acids