Read the passage. anyone with a pet has probably taken it to a vet, which is an animal doctor. but what happens if a pet becomes very ill? like people, animals can have problems that need a special doctor. so, there are vets who work in one special area. they might take care of only heart problems or only eye problems. these vets usually work at large animal hospitals, not neighborhood offices. to become a special kind of vet, a person needs to go through extra training and pass a number of tests. the need for these doctors"and all vets" is growing because people are taking better care of their pets.

why would a person read this passage?
a. to find a funny story about animals
b. to learn about special kinds of vets
c. to learn about sick animals
d. to find a vet for their pet