AP DSC School Assistant Math Model Test 3

Concept:Vitamin C (ascorbic acid, C6H8O6) is an essential water-soluble vitamin that must be obtained from diet; citrus fruits are its richest natural sources.Explanation:Among the given options, lemon provides about 31 mg of vitamin C per 100 g, making it the richest source. Cow milk, potato, and cucumber contain significantly lower amounts. Vitamin C is not synthesized by the human body, is important for tissue repair, immune function, and acts as an antioxidant. Its deficiency causes scurvy.Answer:Option A: Lemon.