who do tu think is a better friend to caroline Bonnie o elena?

I think Elena. In the past Bonnie has just been much too bigoted and prejudiced against vampiros for her actions to be considered in Caroline's favour.

Elena,because she was always there for her when Caroline needed her.

I think Elena!

Elena. She was always there for Caroline when Caroline need it, while Bonnie wasn't.

Elena she is soooooooooooooo nice to careoline