Final answer:
The claim that Prime Minister John Defenbaker competed in the 1936 Berlin Olympics is false. There is no record of him as an Olympian, as he was a notable Canadian politician and prime minister. Other historical statements require context-specific analysis to determine their accuracy. The correct option is b.
Step-by-step explanation:
The statement that Prime Minister John Defenbaker competed in the 1936 Berlin Olympics is false. John Diefenbaker was a Canadian politician who served as the Prime Minister of Canada, but there is no historical record of him competing in the Olympics. Instead, he was known for his political career and not for athletic achievements.
The rest of the questions provided refer to various historical events and figures related to American and world history. Each statement can be addressed based on historical facts. For instance, Jefferson's efforts using economic pressure against Britain and France, the Proclamation of 1763 as a response to Pontiac's War, or the Conciliatory Proposition need to be evaluated within their historical contexts to determine their truthfulness.
Correct answers require an understanding of history and the ability to analyze historical events and their outcomes while also debunking any myths or misconceptions like the one presented about Diefenbaker's alleged Olympic participation.
Hence, Option b is correct.