! the following characteristics best describe which canadian region?

i. the region covers over half of canada’s mainland.

ii. the region is composed of rough and rocky terrain.

iii. the region is composed of some of the earth’s oldest rocks.

a.

the appalachian mountains

b.

the laurentian mountains

c.

the canadian shield

d.

the lowlands

I guess the most appropriate answer is C !

C.  the Canadian Shield

Explanation:

The Canadian shields are also known as the Laurentia plateau and are a large area that is exposed to the Precambrian rocks and high-grade metamorphic rocks and is composed of a large volcanic history and a thick layer of soil, and its starches form the north of the great lakes covering half of the Canada. It has a sparse population, and covers an area of 800,00,00 km square. The Canadian shied are the oldest regions on earth with the dating of 2.5 to 4.2 billion years.

Increasing the release of greenhouse gases and pollution