Which group includes organisms that decompose organic material?

The correct answer is Decomposers because this group of organisms plays a critical role in ecosystems by breaking down dead organic material and recycling nutrients back into the environment. Decomposers, which include fungi, bacteria, and certain insects, utilize dead plants and animals as their food source, breaking down complex organic compounds into simpler substances. This process not only helps in nutrient cycling but also maintains the health of ecosystems by ensuring that organic waste is processed efficiently.

In contrast, carnivores, herbivores, and omnivores are different categories of consumers that obtain their energy from living organisms. Carnivores eat other animals, herbivores consume plants, and omnivores eat both plants and animals. While they are all essential for the food web, they do not perform the decomposition process that is vital for nutrient recycling. Therefore, Decomposers are the only group specifically identified for their role in decomposition.