I don't think Ariel is naive at all

Snow White is definitely more naive. I think Snow is a little smarter though.

Snow White is very mature for her age, but she's also very naive.

I personally believe Rapunzel's the most naive princess. Snow White is more naive by far than Ariel though, because Ariel's just out of her element when she acts naive. Snow White has her moments of intelligence and cunning too though (don't laugh) that people often perceive as naivety sadly though.

Agree with KataraLover. Ariel is not naive; she's sneaky.

I don't think Snow White is naive at all, she's only a bit naive in the end of the movie, that's all. Ariel is very naive, but I would rather say she's immature, anyway, she makes wrong decisions, she leaves her family to be with Eric and even when she's human she acts like a child though that's because she's never been a human, but still

I agree with sweetie-94 exactly.

Ariel isn't naive, I feel like she's just willing to take the risk despite the possible consequences.