What does she do aside from pick berries? She does have that one interesting line about dreams but is pretty flat everywhere else. At least Snow White and Cinderella have sewing and cooking skills.

Eliminate Elsa all she can do is make her one ice sculptures.

Ciara: Making ice sculptures is difficult, especially considering the level of detail she puts into them (plus, she knows what fractals are and can make them). She is also a queen which means that she more than likely received the best education possible.

Eh...She doesn't do much.

She lacks common sense. Then Id go with Aurora

She thinks before she acts.

Either her or Merida.

or Aurora

The countdown says to show the least educated. Merida is shown clearly being thoroughly educated so it's really not fair to vote for her.

Aurora was raised by clueless fairies so I doubt she got much of an education.

According to my own list this, is how it should turn out.

Aurora makes some smarter decisions than Snow White. She doesn't give Phillip her name, she tells him to meet her at the cottage... While Snow gets warned that she Queen can disguise herself and that she can find her and she could be anywhere and she still is careless.

She is the youngest princess and she lived with the Queen for most of her life. And since the queen hated her, I doubt she taught her anything. She also doesn't make the best decisions.