What bay cuts into and is almost completely surrounded by the canadian shield?

The Hudson bay

Explanation:

The Canadian Shield refers to the large and extensive area that is comprised of Precambrian igneous rocks as well as metamorphic rocks of higher grade. These rocks together form the base (shield rocks) of the North American continent.

The Hudson bay is considered to be a large basin present in the northeastern part of Canada, that is present mostly in the middle of this shield, which cuts the rocks of the Canadian shield. It is comprised of a large amount of salt-water.

the correct answers are:

a - pacific plate;

it is the biggest oceanic tectonic plate. surrounded on all sides by continental tectonic plates, it is submerging and gradually becoming smaller and smaller.

b - north american plate;

huge continental plate, occupying big portion of the northern hemisphere.

c -eurasian plate;

alongside the north american plate, it is one of the two dominant continental plates in the northern hemisphere.

d - indian plate;

a small continental plate, that has been part of gondwanaland initially, but after the break up of it, moved towards northeast and pushed into the eurasian plate that was once part of laurasia.