Riddle

I wiggled and cannot see, sometimes underground and sometimes on a tree. I really don't want to be on a hook, and I become a person when combined with a book. What am I?

Choose an answer

A.Snake
B.Caterpillar
C.Grub
D.Worm
Hint: It's a word with 4 letters, starting with "W".

Answer

Worm

Why this is the answer

A blind, wiggling creature is a worm, and "worm" plus "book" makes "bookworm," an avid reader.

This riddle is filed under How, What, Why Riddles and rated Medium.