Option 1 states that both statements are individually true and that Statement II is the correct explanation of Statement I.

Statement I explains that the potential energy from pushing water above mean sea level is converted into kinetic energy, which then initiates the horizontal propagation of tsunami waves. This is generally true as the vertical displacement of water is one of the main causes of tsunamis.

Statement II explains that the vertical displacement of sea water due to abrupt and jerky movements of fault blocks on the sea bed gives birth to tsunamis. This is also true as tsunamis are often caused by underwater earthquakes or seismic activity that causes the vertical movement of water.

Therefore, both statements individually make sense and Statement II explains the process described in Statement I. Option 1 correctly identifies this and is the correct answer.