Answer this question.
18.Arachidonic acid as
(a) Non-essential fatty acid
(b) Essential fatty acid
(c) Polyunsaturated fatty acid
(d) Both (b) and (c)

Dear student.

The correct answer is  (c) Polyunsaturated fatty acid.

Arachidonic acid is not an essential fatty acid.  Arachidonic acid has 20 C atoms. It is a  polyunsaturated omega-6 fatty acid, and is present in phospholipids of the cell membrane.

Regards.