Question

which of the following statements about zinc is true?
multiple choice
megadoses of zinc are not known to cause harm, so no ul has been set.
zinc deficiency in north america is rare because of the wide distribution of zinc in foods.
fruits and vegetables are good sources of zinc.
absorption of zinc is regulated by ferritin.

Explanation:

• Analyze each option:
• Option 1: Megadoses of zinc can cause harm (e.g., nausea, copper deficiency), so a UL (Tolerable Upper Intake Level) is set. Thus, this statement is false.
• Option 2: Zinc is widely distributed in foods (like meats, legumes, whole grains) in North America, so deficiency is rare. This statement is true.
• Option 3: Fruits and vegetables are not good sources of zinc; better sources are animal products and some plant - based foods like legumes. So this statement is false.
• Option 4: Ferritin regulates iron absorption, not zinc. So this statement is false.

Answer:

B. Zinc deficiency in North America is rare because of the wide distribution of zinc in foods. (Here we assume the second option is labeled as B, following the common multiple - choice labeling convention. If the original question had a different labeling, adjust accordingly based on the actual option numbering in the question's context.)