Question

scientists have found ancient rock formations dating to the late proterozoic eon in south america. these ancient rocks can be found from the eastern edge of south america’s continental shelf, which extends just off the coast of brazil, to the interior of the continent. this general location is indicated by a green circle on the map below.
scientists have also found rock formations made out of the same type of rock and from the very same eon at another location. the location of this second group of rock formations strongly supports the current theory of plate tectonics.
where is the second rock formation most likely located?

Explanation:

The theory of plate tectonics includes continental drift, where continents were once joined (Pangaea) and later drifted apart. South America and Africa were part of the same landmass, so rock formations from the same eon and type in South America should have a matching formation in Africa (near the western coast, as the green circle is on eastern South America; the red circle in Africa's western region aligns with this continental fit).

Answer:

The second rock formation is most likely located at the red circle on the western part of the African continent (the red circle in Africa, matching the continental drift pattern with South America's green circle location).