The head of a provincial government is called:

Discover Canada records this in one direct sentence. The guide writes: In each province, the Premier has a role similar to that of the Prime Minister in the federal government, just as the Lieutenant Governor has a role similar to that of the Governor General. The role the test wants is therefore the Premier.

The parallel between provincial and federal structures is the heart of the answer. Discover Canada sets it up like this: at the federal level, the head of state is the Sovereign (represented by the Governor General) and the head of government is the Prime Minister. In each province, the head of state's representative is the Lieutenant Governor, and the head of government is the Premier. So Premier and Prime Minister play matching roles at different levels.

The Premier's responsibilities follow the same logic as the Prime Minister's. Discover Canada describes the Prime Minister as "responsible for the operations and policy of the government," selecting Cabinet ministers and "actually direct[ing] the governing of the country." The Premier does the same job at the provincial level — running the province's executive and answering to its elected legislature.

The territorial parallel is slightly different. Discover Canada writes that "in the three territories, the Commissioner represents the federal government and plays a ceremonial role," so territories also have an elected leadership similar to a Premier — but the Sovereign's representation works through the federal Commissioner rather than a Lieutenant Governor.

The question is testing whether new citizens know the provincial parallel of the federal Prime Minister. Discover Canada commits to one term: the Premier. The right test answer is the same.

The wrong answer choices each pick a different role. The Prime Minister is the head of the federal government — not a province. The Lieutenant Governor represents the Sovereign in each province — not the head of government. The Governor General represents the Sovereign at the federal level. None of those is the head of provincial government.