• Sanguivores are creatures that only consume the blood of other creatures. Obligate sanguivorous are those sanguivorous creatures that do not consume any other food sources to save blood. White-winged vampire bats, as an illustration.
• Animal feeding settings vary depending on the growth and development of the animal food. Often it also depends on the food options that are available in the immediate environment. Animals have been categorized into a number of classes according to where they get food.
• Animals that only depend on fruit for their nutrition are called Frugivorous animals.
• Entomophagy organisms that feed on insects.
• Decomposers are the organisms that feed on the dead matter in the soil.

Hence, option B is the correct answer.