Riddle

Where force can't get through, I with a gentle movement do. What am I?

Choose an answer

A.A hinge
B.A latch
C.A lever
D.Key
Hint: It's a word with 3 letters, starting with "K".

Answer

Key

Why this is the answer

A locked door can resist being forced open, but the correct key opens it with just a gentle turn.

This riddle is filed under "What Am I?" Riddles and rated Medium.