Which one is an essential fatty acid?

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Linoleic acid

Linolenic acid

Arachidonic acid

All the above

answer is D.

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Detailed Solution

Concept: People and other animals must consume essential fatty acids because they are nutrient-rich but cannot be synthesised. However, fatty acids that are primarily used as fuel for biological processes are not included in the definition of a "essential fatty acid." The body uses essential fatty acids for a variety of purposes.
A unique role for linoleic acid is in the maintenance of heart health. Linolenic acid prevents and reduces inflammation by preventing the formation of prostaglandins. The liver, muscles, and brain all contain large amounts of arachide acid. Arachidonic acid is a polyunsaturated fatty acid that is present in the brain , muscles, liver and inside the body's membranes.
Hence, option 4 is the correct answer.

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