The correct answer is B. Bat.
Rabies is a viral disease that affects the central nervous system of mammals. It is usually transmitted through the bite of an infected animal, most commonly a dog. However, other animals can also carry the rabies virus, including bats, raccoons, skunks, foxes, and coyotes.
Bats are the most common animal to carry rabies in the United States. They are also the most likely to transmit the disease to humans. This is because bats are often found in close proximity to humans, and they can easily bite without being noticed.
Rabies is a very serious disease. If left untreated, it is almost always fatal. However, there is a vaccine that can prevent rabies. If you are bitten by an animal that you think may be rabid, it is important to seek medical attention immediately.
The other options are incorrect because they are not animals that are known to carry the rabies virus. Donkeys, horses, and crocodiles are not known to transmit rabies to humans.