Which of the following is an Omega-3 fatty acid?

Correct option is A

Omega-3 fatty acids are polyunsaturated fatty acids with the first double bond at the third carbon from the methyl end of the fatty acid chain.
α-Linolenic acid (ALA) is a plant-based essential omega-3 fatty acid, commonly found in flaxseed, chia seeds, walnuts, and canola oil.
ALA is a precursor for the synthesis of other important omega-3 fatty acids like EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), although conversion in the body is limited.
Linoleic acid (Option b) is an omega-6 fatty acid, not omega-3.
Arachidonic acid (Option c) is also an omega-6 fatty acid derived from linoleic acid and is involved in inflammatory responses.
Lauric acid (Option d) is a saturated fatty acid, found in coconut oil and palm kernel oil, and has no relation to omega-3 classification.
Therefore, the correct answer is Option (a) – α-Linolenic acid.