The correct answer is force.
The correct answer is (B) Force (implying exertion, vigor, and persistence); power; blow; stroke. Also, a mark or dent made by pressure, blow, exertion, etc.
Dint comes from Old English dynt (stroke, blow), Old Norse dynir.
Examples of use:
- He won a position on the team by dint of hard work.
- She wallpapered the rooms without help by dint of her perseverance.