Solution:Statement 1 Sea waves of seismic origin i.e, Tsunami's are series of enormous waves created by an sudden underwater disturbance such as earthquake, landslide, volcanic eruption, etc. Gravitational wave → These are the waves generated due to massive disruptions in space-time curvature like Merger of Black hole, Supernova's etc. So they are not general in nature, they specifically formed due to sudden disruptions. Statement 2 The sea wave of shorter wavelength have high energy & high frequency due to which they reach their maximum height faster while the sea wave of longer wavelengths have low amount of energy & low frequency comparatively & it takes more time to reaches its maximum height. So option I is correct.