Deficiency of fluoride leads to which one of the following health problems?

Which one among the following diseases is caused due to deficiency of Vitamin D in humans?

Which one among these is related to the deficiency of potassium?

Which one of the following pairs matches one another?

Which one of the following is not an epidemic disease?

With regard to the transmission of the Human Immunodeficiency Virus, which one of the following statement is not correct?