What is the capital city of Canada?

The capital city of Canada is Ottawa, which is situated in the province of Ontario. Ottawa was chosen as the capital in 1857 by Queen Victoria due to its strategic location along the Ottawa River, making it a center for trade and communication between the provinces of Ontario and Quebec. The city's status as the capital is reflected in its many national institutions and landmarks, including the Parliament of Canada, the official residences of the Prime Minister and Governor General, and several national museums.

Contrasting with the other cities listed, while Toronto is the largest city in Canada and serves as a major financial and cultural hub, it is not the capital. Vancouver is well-known for its stunning natural scenery and diverse population but also does not hold the title of capital. Montreal, a significant cultural center in the province of Quebec, has historical importance and is known for its vibrant arts scene, yet it is not the capital of Canada. Thus, Ottawa's unique position as the capital is established through its political and historical relevance, setting it apart from the other choices.