<prompt> Which of the following has the highest percentage of polyunsaturated fatty acids?MargarineSoya bean oilPalm oilGround nut oil  <response>: Among the given options, soya bean oil has the highest percentage of poly unsaturated fatty acids. Linoleic and linolenic acids are examples of poly unsaturated fatty acids. Soya bean oil has about 51 linoleic acid and 7 of linolenic acid. Linoleic acids is the most impoant essential fatty acid. Ref: Parks Textbook of Preventive and Social Medicine 19th Edition; pages 482 - 483. 