The cratonic platform of North America is Group of answer choices A) a low-lying region where Precambrian rocks are covered by Phanerozoic sedimentary strata. B) a low-lying region of oceanic crust surrounded by Proterozoic crustal blocks. C) a region of compressed rock located behind a volcanic arc at a convergent continental margin. D) a low-lying region where Precambrian rocks crop out.

A) a low-lying region where Precambrian rocks are covered by Phanerozoic sedimentary strata.

Explanation:

The cratonic platform of North America also called Laurentia(named after laurentian shield) or the North American Craton could be described as a large craton that is the great ancient geological core of the North American continent. It was formed as a result of the collision of microcontinents and oceanic islands giving birth to the Precambrian craton of today.

The Precambrian is used to refer to the earliest history of the geologic ages, which are marked by Precambrian rocks. These rocks/Precambrian rocks trace back millions of years of Earth's history and contain records of fossilized remains of dead plants and animals in this time.

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