Answer:
C) is polar.
Explanation:
Hydrogen has an atomic number of 1. The electronic configuration of the hydrogen is 1s¹ .
2 atoms of hydrogen combine together to complete their duplet and become stable. Sharing of one pair of electrons between the two hydrogen atoms take place and thus formation of covalent bond take place.
Since, both the atoms are hydrogen and have same electronegativity. So, the bond is not polar.