Why does Coraline's mother choose not to lock the mysterious door? It doesn't go anywhere.

She does not believe in monsters,

She does not have a key she can use to lock the door.

voracity is the noun corresponding to the adjective voracious, which means (1) eager to consume a great amount of food, or (2) marked by an insatiable appetite. veracity is far more common than the rare voracity, so the latter is sometimes used in place of the former.

c is the answer because first she would blush to make the reader wonder why which they find out in the next line.