Riddle

Guided, I am scraping along, leaving behind my snow-white dust against that which I am scraping, for when I am scraping, I must. What am I?

Choose an answer

A.Eraser
B.Pencil
C.Crayon
D.Chalk
Hint: It's a word with 5 letters, starting with "C".

Answer

Chalk

Why this is the answer

Chalk is guided across a surface (like a chalkboard) and leaves behind white dust as it wears away -- it must scrape to do its job.

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