Answer: Detrivore
Explanation: Detritivores are a smaller, narrower branch of decomposers that break down dead organic matter by consuming it, like worms. Scavengers, on the other hand, only eat some of the dead animal, but cannot break down the entire carcass, like the bones and feathers (I know that's not the question, but it may help to know the difference). Carnivores are animals that only eat the flesh (meat) of other animals, like a blue whale, which feeds on krill. Herbivores only eat plants, or herbs, like zebras. Omnivores, like humans in general, eat both plants and animals.
I saw that somebody else already answered, but I thought it might help a bit more to explain what each group was and how they are different :)