The mine workers are most likely to suffer from which of the following conditions due to lack of sunlight exposure?

$A$ person suffering from bleeding gums should consume which of the following?

Which one of the following pairs is not correctly matched?

Among the five statements $(a - e)$ given below,identify the three correct statements regarding Beriberi:
$(a)$ This debilitating disease is found in the sub-Saharan population of Africa.
$(b)$ It is a deficiency disease caused by the lack of Thiamine (Vitamin-$B_1$).
$(c)$ It is a nutritional deficiency in older children and infants caused by a chronic lack of dietary protein.
$(d)$ This deficiency is commonly found in countries where polished rice is the staple food.
$(e)$ Symptoms include nerve weakness,pain,paralysis,muscle wasting,loss of appetite,mental confusion,and eventually heart failure.

Which disease is caused when a child is fed with food that is poor in both protein and caloric value,replacing mother's milk at an early age?

Long exposure to high doses of vitamin $D$ will cause: