Physics - Mechanics - Rotational Motion - Torque - Door Opening Puzzle

Present a scenario: 'You need to open a heavy door. Where should you push?' Options: (A) Near the hinge, (B) In the middle, (C) At the edge (far from hinge), (D) Doesn't matter. Reveal: Edge is easiest (maximum torque with same force). Then: 'You're trying to loosen a bolt with a wrench. Should you