Final answer:
Sir Louis-Hippolyte La Fontaine was a champion of democracy and French language rights and was the first leader of a responsible government in the Canadas.
Step-by-step explanation:
Sir Louis-Hippolyte La Fontaine was B. A champion of democracy and French language rights and the first leader of a responsible government in the Canadas.
His tenure marked significant progression towards democracy within the Canadian context, particularly for French-speaking citizens in the Canadas.
Establishing a responsible government was crucial in the evolution of Canada's political system, ensuring that the executive branch of government is directly accountable to the legislative branch, rather than to the Monarch or its representatives.