Riddle

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Choose an answer

A.Smoke
B.A plant
C.A candle
D.Fire.
Hint: It's a word with 4 letters, starting with "F".

Answer

Fire.

Why this is the answer

Fire spreads (grows), needs oxygen to burn (like breathing air), and is extinguished by water, despite not being a living creature.

This riddle is filed under Horror & Scary Riddles and rated Medium.