Riddle

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Choose an answer

A.Air
B.A vacuum
C.A bubble
D.Hole
Hint: It's a word with 4 letters, starting with "H".

Answer

Hole

Why this is the answer

A hole has no weight or mass of its own, but if you dig a hole in a bucket of sand or dirt, you'll have less material — and therefore a lighter bucket.

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