Which of the following is a landlocked province in Canada?

Saskatchewan is the correct answer because it is one of the provinces in Canada that does not have any coastlines along the ocean, making it landlocked. Being landlocked means that the province is entirely surrounded by land and does not have direct access to the sea. This can have significant implications on trade, transportation, and the economy.

In contrast, Nova Scotia and Newfoundland and Labrador both have coastlines along the Atlantic Ocean, allowing for access to maritime trade and resources. Quebec, while it has a large inland area, also has access to the St. Lawrence River, which connects to the Atlantic Ocean, giving it maritime access as well. Therefore, Saskatchewan stands out as the only landlocked province among the choices provided.