This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Most important Essential Fatty Acid is 
Select and explain. 
A. Linoleic Acid, B. Linolenic Acid, C. Arachidonic Acid, D. Eicosapentanoic Acid
A: Linoleic Acid
Answer: A: Linoleic Acid 
Explanation: Essential Fatty Acids (EFA): Are those that cannot be synthesized in human body; they can only be derived from the food
The most important EFA is Linoleic Acid, which serves as a basis for production of other EFA

Dietary sources of EFA: