Final answer:
The largest deposit of unrefined bitumen is located in Alberta, Canada. Alberta is known for its abundant fossil fuel resources, including oil, coal, and natural gas. It is estimated that there is more oil in Canada's tar sands than in the underground reserves of Saudi Arabia.
Step-by-step explanation:
The largest deposit of unrefined bitumen is located in Alberta, Canada. Alberta is known for its abundant fossil fuel resources, including oil, coal, and natural gas. The oil in Alberta is found in tar sands, and it is separated and refined for fuel. In fact, it is estimated that there is more oil in Canada's tar sands than in the underground reserves of Saudi Arabia.