The correct sequence of locations in order so that the initial stage is depicted first and followed by more advanced stages of development is:
African rift valley
Red Sea
Atlantic Ocean
This sequence is supported by the theory of plate tectonics, which suggests that the Earth's lithosphere is broken up into a number of plates that move around on the underlying asthenosphere. The African rift valley marks the beginning of a divergent boundary where the African Plate is pulling apart. This results in the formation of a rift valley, which is a long, narrow depression in the Earth's crust.
As the African Plate continues to move apart, the Red Sea is formed in the second stage. The Red Sea is an example of a young oceanic basin that is widening due to seafloor spreading. The Red Sea is located on the boundary between the African Plate and the Arabian Plate.
Finally, in the third stage, the Atlantic Ocean is formed as seafloor spreading continues and the North American Plate and the Eurasian Plate move apart. The Atlantic Ocean is a mature oceanic basin that has been widening for millions of years, and it is still widening today.