It's probably c. Either a necklace or earrings looks nice with that dress.
because i kinda feel like it agrees with its compound subject like u said. but i'm not really sure if that's riight although i just wanted to help that's all there's to it. :)
I think kids should actually, it keeps them separated from distractions by other kids.
Instead of writing it in ENGLISH you should have wrote it in the SPANISH ☺️☺️☺️