Q: Which one of the following sets of elements is essential for the production of red blood cells in human body?
(a)Arsenic and zinc only
(b)Iron and zinc only
(c)Arsenic and iron only
(d)Arsenic, iron, lead and zinc
Correct Answer: (c)
The correct answer is (d) 'Arsenic, iron, lead and zinc'. This question from the General Studies domain tests knowledge of Miscellaneous.