Question

a deficiency of pantothenic acid is rare because _________.
multiple choice
most people take multivitamin supplements
the vitamin is widespread in the food supply
the vitamin can be synthesized in the skin from a cholesterol precursor
bacteria that reside in the large intestine synthesize the vitamin

Explanation:

Pantothenic acid (vitamin B5) is widely distributed in a variety of foods. It is found in both plant - based (such as whole grains, legumes, and vegetables) and animal - based (such as meat, fish, and dairy products) sources. This wide availability in the food supply makes it less likely for people to develop a deficiency.

• The first option “most people take multivitamin supplements” is incorrect because not all people take multivitamin supplements, and the natural food supply is the primary reason for its rarity of deficiency.
• The third option “the vitamin can be synthesized in the skin from a cholesterol precursor” is incorrect as pantothenic acid is not synthesized in the skin from a cholesterol precursor (this is more relevant to vitamin D synthesis).
• The fourth option “bacteria that reside in the large intestine synthesize the vitamin” is incorrect. While some gut bacteria can produce certain vitamins (e.g., vitamin K), pantothenic acid is mainly obtained from the diet.

Answer:

the vitamin is widespread in the food supply