The correct option is B The possession of sharp and hooked beaks.
Carnivorous birds are meat eating birds like falcons, hawks, and eagles. Beak shape: upper mandible is typically curved downwards or hooked and with a razor sharp tip for piercing into the flesh of prey. Since birds cannot chew, chunks of flesh are ripped off the prey's body and swallowed whole, usually accompanied by a kind of gulping motion. Some birds of prey, like the osprey, are piscivorous (fish eating).