To do away with a rule

A. Cancel

B. Repeal

C. Obliterate

D. Abrogate

Answer: Option D

Solution(By Examveda Team)

One word substitute is Abrogate.

Cancel: decide or announce that (a planned event) will not take place.
Repeal: revoke or annul (a law or act of parliament).
Obliterate: destroy utterly; wipe out.
Abrogate: repeal or do away with (a law, right, or formal agreement).