The secret garden

which quotation from the secret garden contains hyperbole?

a. mary asked no more questions but waited in the darkness of her corner, keeping her eyes on the window.

b. she heard something rustling on the matting and when she looked down she saw a little snake gliding along and watching her with eyes like jewels.

c. "she was as sweet, pretty thing and he'd have walked the world over to get her a bade o' grass she wanted."

d. "my word! she's a plain little piece of goods! "