Final answer:
The largest company in Norway is Statoil, which is involved in the exploration and production of petroleum and natural gas reserves.
Step-by-step explanation:
The largest company in Norway is Statoil, which is headquartered in Stavanger. Statoil is primarily involved in the exploration and production of petroleum and natural gas reserves. Norway has been benefiting from the enormous oil and natural gas resources under the North Sea, and Statoil plays a significant role in the country's energy industry.