Final answer:
The true statement about linolenic acid is that a) it can be converted to eicosapentaenoic acid (EPA). Linolenic acid is an essential omega-3 fatty acid and not soluble in water.
Step-by-step explanation:
The correct answer to the question, Which of the following is true of linolenic acid, is: a. It can be converted to eicosapentaenoic acid. Alpha-linolenic acid (ALA) is an essential omega-3 fatty acid that the human body cannot synthesize and must be obtained through the diet. Alpha-linolenic acid can indeed be converted into eicosapentaenoic acid (EPA), although the conversion efficiency in the human body is low. It is not a nonessential amino acid, nor is it an omega-6 fatty acid, and it does not dissolve in water, which addresses the falsehoods in options b, c, and d.