Question

scientists have found ancient rock formations dating to the late proterozoic eon in south america. these ancient rocks can be from the eastern edge of south america’s continental shelf, which extends just off the coast of brazil, to the interior of the continthis 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. thlocation 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:

Plate tectonics theory states that continents were once joined (e.g., Gondwana/Pangaea). The green circle marks late Proterozoic rock off Brazil's coast. Matching coeval rock formations would be in a location that was adjacent to Brazil before continental drift—specifically, the west coast of Africa (which fits the red circle on Africa in the map), as South America and Africa were once connected.

Answer:

The red circle on the west coast of Africa (the middle red circle in the map)