to discuss the possible benefits of stem cell research
The main purpose of the passage is to discuss the possible benefits of stem cell research. The author states that many people feel it is unethical, but most of the passage is devoted to discussing the possible benefits of stem cell research. Cures for diseases and being able to repair spinal cord injuries are the possible benefits identified.
B to identify diseases that have been cured through stem cell research
C to argue that not conducting stem cell research is unethical
D to discuss why people believe stem cell research is unethical