He cut the Gordian knot by practising what he preached.

Options

A. respect that something is wrong
B. avoid starvation
C. remove the difficulty
D. to take rest

Answer

C

Explanation

cut the Gordian knot : solve or remove a problem in a direct or forceful way: to find a bold solution for a perplexing problem. Look at the sentence : They have decided to cut the Gordian knot to wipe out the enemy at a blow. The best option is remove the difficulty