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What was Dr. Wilder Penfield known for?

  1. Pioneering brain surgery at McGill University

  2. Inventing the first cardiac pacemaker

  3. Creating the Canadarm

  4. Founding Research in Motion (RIM)

The correct answer is: Pioneering brain surgery at McGill University

Dr. Wilder Penfield was a renowned neurosurgeon who is most well-known for his contributions to the field of neurosurgery. As such, incorrect options B, C, and D do not align with his expertise in this field. Option B refers to the invention of the first cardiac pacemaker, a medical device used to regulate heart rhythm, which is not related to neurosurgery. Option C mentions the creation of the Canadarm, a robotic arm used in space missions, which is also not related to neurosurgery. Option D mentions Research in Motion, a Canadian technology company known for creating the Blackberry, which is also not related to neurosurgery. Therefore, option A is the most accurate answer as Dr. Wilder Penfield is most well-known for his work in pioneering brain surgery at McGill University.