Question

Which element must be present in an organic compound?(1) hydrogen (3) carbon(2) oxygen (4) nitrogen

Answer 1

CARBON is the element that must be present in an organic compound. 

Answer 2

the answer is 3) carbon

main component of organic compounds are the element carbon

C forms covalent compounds with other C atoms and form long chains resulting in forming compounds that are very useful to us in our day to day life

human body is made of 4 types of organic molecules.

C covalently bonds with other atoms such as H, O and N etc. forming a large array of useful compounds