Answer:
Option (4)
Explanation:
Plate motion takes place due to the generation of the convection current in the mantle. This mechanism forces the lithospheric crusts to move over the asthenosphere layer. This plate motion takes place in three ways-
1) Divergent plate motion- here, the two plates move in the opposite direction.
2) Convergent plate motion- here, the two plates move towards each other.
3) Transform plate motion- here, the two plates slide past each other. This type of plate boundary is also known as the conservative plate boundary as in this type of plate boundary, the plates are neither destroyed nor created. There occurs the conservation of plate boundary. Shallow-focus earthquakes are generated due to this type of plate motion.
Thus the correct answer is option (4).