The correct answer is option 2: Focus. The focus is the point inside the Earth`s crust where the seismic energy is released during an earthquake. It is also known as the hypocenter. This is the point where the earthquake originates or initiates.

Option 1: Epicenter is not the point of origin of the earthquake waves but instead, it is the point on the Earth`s surface directly above the focus. The epicenter is the location on the surface where the earthquake is felt the strongest.

Option 3: Photosphere is not related to earthquakes. It is the visible surface of the sun.

Option 4: Seismic zone is a broad term that refers to an area prone to earthquakes. It encompasses various regions around the world. However, seismic zone is not specifically the point of origin of earthquake waves.

In conclusion, the focus is the correct term for the point of origin of earthquake waves, while the epicenter is the point on the Earth`s surface directly above it.