Divergent plate boundary is a boundary that occurs between two tectonic plates:

Explanation

The correct answer is (D) that are moving away from one another. Explanation: A divergent plate boundary is a type of tectonic boundary where two plates move away from each other, creating new crust in the gap formed. These boundaries are mainly found along mid-ocean ridges and continental rift zones, where magma rises to the surface and solidifies, forming new lithosphere. Information Booster: Formation: Occurs when tectonic plates move apart, leading to the upwelling of magma from the mantle. Examples: Mid-Atlantic Ridge – Separates the Eurasian Plate and North American Plate. East African Rift Valley – A continental rift where the African Plate is splitting into two smaller plates. East Pacific Rise – A fast-spreading divergent boundary in the Pacific Ocean. Effects: Creation of mid-ocean ridges and rift valleys. Formation of volcanoes and seismic activity due to rising magma. Leads to sea-floor spreading, expanding ocean basins over time. Additional Knowledge: Convergent Boundary Occurs when two plates move toward each other. Leads to mountain formation, deep-sea trenches, and subduction zones. Example: Himalayas (Indian and Eurasian Plate collision). Subduction Zone Happens when one tectonic plate moves under another. Forms volcanic arcs and ocean trenches. Example: Mariana Trench (Pacific Plate subducting under Mariana Plate). Transform Boundary Occurs when two plates slide past each other horizontally. Causes major earthquakes due to friction. Example: San Andreas Fault (North American Plate and Pacific Plate moving laterally).