Final answer:
The modern continental rift is located in Eastern Africa, within the Great Rift Valley, which is formed by the split of the African Plate into the Somalian Plate and the Nubian Plate.
Therefore, the correct answer is: option 2) Eastern Africa
Step-by-step explanation:
A continental rift is conventionally described as a thinning process of the lithosphere ultimately leading to the rupture of the continent and the formation of a mid-oceanic ridge. Rifting is the initial and fundamental process by which the separation of two continents into two tectonic plates takes place.
The region that contains a modern continental rift is Eastern Africa, which is home to the Great Rift Valley. This valley provides evidence of a split in the African Plate, dividing it into two smaller tectonic plates: the Somalian Plate and the Nubian Plate.
The Great Rift Valley is divided into the Western Rift and the Eastern Rift, with the Western Rift being characterized by a series of deep water lakes such as Lake Tanganyika, Lake Edward, and Lake Albert, and the Eastern Rift hosting Lake Victoria. The rift extends from Mozambique to the Red Sea, and its movement is a result of tectonic activities.