Riddle

What can be any size or shape and gets bigger the more you take from it?

Choose an answer

A.Debt
B.Shadow
C.Crater
D.Hole
Hint: It's a word with 4 letters, starting with "H".

Answer

Hole

Why this is the answer

Digging more material out of a hole only makes the hole itself larger, no matter what shape or size it started as.

This riddle is filed under Hard/Difficult Riddles and rated Medium.