The splitting of a single tectonic plate into two or even more tectonic plates isolated by divergent boundaries borders is referred to as rifting.
Option (d) is the correct response to the Jurassic period.
Who is responsible for the tectonic plates during the Jurassic period?
The opening of the Atlantic Ocean was caused by tectonic plate rifting in eastern North America during the Jurassic Period.
The east coast, where rifting exposed the Atlantic Ocean; the western interior, where continental sediments and epicontinental seaway sediments accumulated.
The west coast, where deformation occurred due to the presence of offshore subduction trenches.
For more information about tectonic plates, refer below
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