Final answer:
The Liberal Party, led by Prime Minister Justin Trudeau and upholding center-left democratic liberalism, is the current ruling party of Canada. The correct answer is option 1.
Step-by-step explanation:
The current ruling party of Canada is the Liberal Party. The Liberal Party has been in power since the federal election of 2015 and was re-elected for a minority government in the 2019 and 2021 elections. Led by Prime Minister Justin Trudeau, the party espouses a center-left democratic liberalism ideology, which aligns with the broader tradition of political thought stemming from Locke and evolving through the 19th and 20th centuries. While there are multiple parties in the Canadian political system, the Liberals currently hold the power to govern nationally.