Concept:The point of origin of an earthquake is the location inside the Earth where the energy is first released.
Explanation:Earthquakes happen when stress stored in rocks is suddenly released.
The exact point inside the crust where this rupture starts is called the seismic focus or hypocentre.
The point on the Earth's surface directly above the focus is called the epicentre.
Seismic waves travel outward from the focus in all directions.
So, the "point of origin" refers to the focus, not the epicentre.
Tectonic point and plutonic point are not correct terms for this origin point.
Answer:B. Seismic focus