Final answer:
Essential fatty acids that must be consumed through diet are linoleic and alpha-linolenic acids, as these cannot be synthesized by the body(option a).
Step-by-step explanation:
The essential fatty acids (FAs) that must be obtained by eating foods containing these FAs are option a)linoleic and alpha-linolenic acids.
The human body cannot synthesize these essential fatty acids, making it necessary to include them in our diet for normal growth and development. Linoleic acid, an omega-6 fatty acid, and alpha-linolenic acid (ALA), an omega-3 fatty acid, play crucial roles in health, including the synthesis of other unsaturated fatty acids and the efficient transport and metabolism of cholesterol. Foods rich in linoleic acid include plant oils like corn oil and soybean oil, while ALA is abundant in nuts, flaxseed, and dark green leafy vegetables.