Answer:
I think
A. Atlantic Ocean
Step-by-step explanation:
The Atlantic ocean is the second largest ocean in the whole world. It covers over 20% of the ocean waters. The Atlantic ocean forms it's border around Canada.
"The Atlantic Ocean is the world's second-largest ocean, covering 20 per cent of the planet's surface. It forms Canada's eastern seaboard and includes the entire coasts of New Brunswick, Nova Scotia, Prince Edward Island and Newfoundland and Labrador. It also includes Quebec's southeastern border, along the Gulf of St." said an article written by The Canadian Encyclopedia.