A young man in a rural Iranian village eats very little meat and dairy products, but his diet contains a lot of unleavened whole-grain flat bread. He is very short for his age; his sexual organs are not fully developed; his intelligence is lower than normal; and he suffers from iron deficiency anemia. Based on this information, the man probably has deficiency.
a. folate
b. zinc
c. vitamin K
d. acetyl-CoA

Zinc

Explanation:

Zinc deficiency is a condition in which the amount of zinc present in the body is low. It means there is not enough quantity of zinc in the body that is needed to carry out various functions.

Zinc deficiency could lead to hair loss, skin rashes, poor vision, growth problems, weight loss, inability to taste well, loss of apetite.

It is therefore necessary to take the right amount of zinc present in foods like meat, legumes, nuts, egg, milk.

ZINC ---B

Explanation: To function at its optimum rate, our body needs a variety of vitamins and essential minerals. One of such essential mineral is zinc, which is found in  Beef and poultry providing  the majority of zinc sources including beans, nuts,  and dairy products.

When this mineral is deficient in our body as can be identified in the young man from the Iranian village from the question, it can lead to delayed sexual maturity , stunted growth, poor healing , unexplained weight loss, poor cognitive development etc because Zinc is responsible for boosting the  immune system and cell division and multiplying leading to growth and development.