Riddle

I am wood that is neither hard, straight, or crooked. What am I?

Choose an answer

A.Bark
B.Kindling
C.Plywood
D.Sawdust
Hint: It's a word with 7 letters, starting with "S".

Answer

Sawdust

Why this is the answer

Sawdust is the fine, crumbly byproduct of cutting wood, with none of a plank's hardness or straightness.

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