Which NHL team is based in Edmonton?

The Edmonton Oilers are indeed the NHL team based in Edmonton. Established in 1972 and a member of the Pacific Division in the Western Conference, the Oilers have a rich history, including multiple championships in the 1980s. They are well-known for having legendary players like Wayne Gretzky and Mark Messier on their roster during their peak years.

The other teams listed, such as the Calgary Flames, Vancouver Canucks, and Toronto Maple Leafs, are based in different cities across Canada and have their own unique histories and fanbases, but they are not located in Edmonton. This geographic distinction is what makes the Edmonton Oilers the correct choice in this context.