The main vessel routes from/to the St. Lawrence River and Toronto pass through which group of islands and shoals?

The correct choice is grounded in understanding the significant waterways of Lake Ontario and the surrounding regions. The Thousand Islands area, located at the mouth of the St. Lawrence River, is known for its numerous islands that create a natural corridor for marine traffic. However, when it comes specifically to navigational routes from the St. Lawrence River to Toronto, factors like significant shoals and strategic islands play a critical role.

Duck Islands and Galloo Shoal are specifically recognized for their positions along critical shipping channels. These features are substantial in maritime navigation due to their geographical placements that direct vessel traffic toward safe and navigable routes within the lake. This region is key for commercial shipping, recreational boating, and larger vessels that are traveling between the river and Toronto.

Other options, such as Thousand Islands and Stony Point, present networks of islands but do not directly relate to the primary vessel routes utilized for commercial navigation from the St. Lawrence River specifically to Toronto. Similarly, the other choices—Long Island and Chaumont Shoal, as well as Lakeview Islands and Hiawatha Shoal—do not represent the critical pathways that serve as main routes for vessels traveling between these important areas in the Great Lakes system.

In summary, Duck Islands and Galloo Sho