Who was known as 'The Greatest Living Canadian'?

Discover Canada records this in one direct sentence. The guide writes: Dr. Wilder Penfield — was a pioneering brain surgeon at McGill University in Montreal, and was known as "the greatest living Canadian". The Canadian the test wants is therefore Dr. Wilder Penfield.

Penfield was a pioneering brain surgeon. Discover Canada identifies him as a brain surgeon at McGill University in Montreal — meaning he worked at one of Canada's oldest research universities, on the most demanding medical specialty of his era. The phrase "pioneering brain surgeon" indicates he developed new techniques for treating brain disorders, contributing to the field internationally.

The title is striking. Discover Canada's phrase commits the description "the greatest living Canadian" directly to Penfield. So during his lifetime, he was recognised as the country's most distinguished citizen — an unusually high honour, reflecting the impact of his medical work both within Canada and abroad.

Penfield is one of several Canadian medical and scientific figures named in Discover Canada. The guide lists him alongside others in its "Great Canadian Discoveries and Inventions" section: Alexander Graham Bell (the telephone idea), Sir Sandford Fleming (worldwide standard time zones), Sir Frederick Banting and Charles Best (insulin), Joseph-Armand Bombardier (the snowmobile), Reginald Fessenden (early radio), Dr. John A. Hopps (the first cardiac pacemaker), SPAR Aerospace / National Research Council (the Canadarm), and Mike Lazaridis and Jim Balsillie (the BlackBerry). So Penfield's place in Canadian history is among the country's foundational scientific figures — but uniquely, with the title "the greatest living Canadian" attached to him during his lifetime.

The question is testing whether new citizens know who was called "the greatest living Canadian." Discover Canada commits to one figure: Dr. Wilder Penfield. The right test answer matches that.

The wrong answer choices each pick a different Canadian. Sir Frederick Banting (Toronto) discovered insulin with Charles Best — but is not given the "greatest living Canadian" title in the guide. the second option is not named in Discover Canada at all. Terry Fox started the Marathon of Hope in 1980 — but the "greatest living Canadian" title belongs to Penfield in the source. Only Dr. Wilder Penfield matches.