Answer:
The correct answer is : option D. 15 minutes.
Explanation:
Vitamin D is essential nutrients that can be acquired naturally by the sun light directly as it is natural source of the vitamin D. The recommended sunlight exposure for getting enough vitamin D is varies according the skin tone of an individual.
Spending only 15 minutes are enough to provide all the vitamin D. required for the day for a lighter skin individual and in 30 minutes for darker person.
Thus, the correct answer according the option Is option : D.
