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Doctors continue to look into new ways to solve organ donor shortages. Xenotransplantation, or the use of animals as organ donors for people, is one possibility being considered. If animal organs are proven acceptable transplants for humans, many lives will be saved. There are people who think this method belongs only in science fiction, but it is already being experimented with. Many scientists believe it will help doctors ____________________.
(a) make a comparative study of animal and human organs
(b) replace other surgical methods
(c) treat patients in need of organ transplants
(d) ease concerns of animal rights groups
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