“Bowled over” explanation: its an idiom
He thinks everyone's supposed to be mad.
`Oh, you can’t help that,’ said the Cat: `we’re all mad here. I’m mad. You’re mad.’
A and B are both good answer but B makes more since because in the sentence it says Frugivores live near their food so they don’t have to fly far, also Frugivores eat bananas from trees and berries so (B) is the answer.