Answered

The PRIMARY obstacle to population growth in the area known as the "Canadian Shield" is that

Athe area is not capable of intensive agricultural output.

Eliminate

Bthe climate cannot support adequate human activity.
Cthe area is rich in mineral resources.
Dit lies mostly in an arctic zone.

Verified Answer :

taskmasters

The exposed portion of the continental
crust underlying North America refers to Canadian Shield. The continental crust
is known as the North American Craton which consists of rocks from the Archean
dn Proterozoic eons and extends from Mexico to Greenland. Canadian Shield also
produces great resources that helped most humans for their economic
development. Because of the resources present in the Shield, it has a great
disadvantage to settlers. The primary obstacle to population growth in the area
is the presence of the bare rock, thin soils, muskeg and insects. So the answer is letter A.

Becky81

Hint: it relates to something humans must have to survive.

The area known as the "Canadian shield" is not capable of intensive agriculture output. The area lies in the northeastern portion of the country and consists of a thin layer of soil over a foundation of bedrock. This yields very little in the way of agricultural output.

so your answer will be the area is  not capable of intensive agriculture output.

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