Which is most likely a keystone species?(1 point)

Question

Responses

wolves in Yellowstone National Park, which eat elk, who graze on willows, on which beavers depend to build their dams
wolves in Yellowstone National Park, which eat elk, who graze on willows, on which beavers depend to build their dams

feral cats, which hunt a wide variety of animals, including birds, lizards, rodents, and insects
feral cats, which hunt a wide variety of animals, including birds, lizards, rodents, and insects

deer, which eat a variety of plants, including shrubs and young trees, and are consumed by large predators like mountain lions, wolves, and bears
deer, which eat a variety of plants, including shrubs and young trees, and are consumed by large predators like mountain lions, wolves, and bears

cane toads in Australia, which were introduced to eat cane beetles, but eat anything and survive in various habitats
cane toads in Australia, which were introduced to eat cane beetles, but eat anything and survive in various habitats

Answer 1

wolves in Yellowstone National Park, which eat elk, who graze on willows, on which beavers depend to build their dams