Chase and Rhonda Are Studying for a Quiz on Vitamins

Chase and Rhonda are studying for a quiz on vitamins. Over the semester break, Chase started taking several dietary supplements including an antioxidant, a multivitamin, and a B-complex supplement to help improve his energy level and nutrient status. Rhonda has been a vegan (consumes no animal products or by-products) for several months. As they study for their quiz, they explore natural sources of the essential vitamins. Chase believes that Rhonda should be taking a multivitamin supplement because of her vegan lifestyle, but Rhonda believes that Chase is likely overdosing on some of the vitamin supplements. Help them study for their quiz, and answer their questions about the need for vitamins. Rhonda wants to find a natural source of vitamin D. Which of the following sources would provide vitamin D and fit into her vegan lifestyle?

A) consuming fish one to two times per week
B) consuming skim milk
C) exposure to direct sunlight for 5 to 10 minutes each day
D) consuming salad dressing
E) consuming peanut butter