Read this line from the text:

"come! will you not like to ride a little way with me, in my beautiful chariot? "

the author has king pluto propose a ride to proserpina using this odd syntax to

confuse her into agreeing to the ride, even though she is inclined to refuse make her focus on the adventure and his apparent trustworthiness promise her a safe, uneventful ride if she will just agree to go with him surprise her with an offer to ride in his special chariot

Confuse her into agreeing to the ride, even though she is inclined to refuse.

Explanation:

In the mythical story of Pluto and Proserpina, the god Pluto had captured the princess, alluring her with a promise of beautiful things in his palace. Despite the warning by her mother to stay with the sea nymphs and never stray away from them, she was enticed to go to the woods. Once there, she got tricked into getting on the horse drawn chariot of the god. He told her that she will find lots of beautiful things in his palace, more beautiful than the ones she see now. Pluto wants her to be in his palace "to run upstairs and down, and cheer up the rooms with her smile. And this is what you must do for King Pluto". This odd syntax of the proposal of offering a ride to her confuses Proserpina into agreeing to the ride even though she is inclined to refuse.

the answer is d: message a character's thoughts