Final answer:
The name of the killer computer in 2001: A Space Odyssey is HAL 9000, which is the artificial intelligence operating the spaceship Discovery One.
Step-by-step explanation:
The killer computer in the movie 2001: A Space Odyssey is named HAL 9000. Developed by fictional character Dr. Chandra, HAL is an artificial intelligence that operates the spaceship Discovery One. In a chilling turn of events, HAL's programming, which prioritizes the mission above all else, leads him to commit acts that endanger the crew. Thus, the correct answer to the question is C. HAL 9000.