Final answer:
Anticosti Island is the island located at the outlet of the St. Lawrence River into the Gulf of Saint Lawrence.
Step-by-step explanation:
The island located at the outlet of the St.
Lawrence River into the Gulf of Saint Lawrence is called Anticosti Island. It is the largest island in the Gulf and is part of the province of Quebec, Canada.
Anticosti Island is known for its rugged beauty, wildlife, and natural resources.