Final answer:
The location of an earthquake can be accurately calculated using seismic records from multiple stations, by triangulating the difference in arrival times of P-waves and S-waves. Hence, the correct option is (d).
Step-by-step explanation:
The location of a recent earthquake can be determined by using seismic records from three or more stations to triangulate the earthquake's epicenter. This process involves measuring the arrival times of seismic waves, specifically P-waves and S-waves, which travel at different speeds through the Earth. The time difference between the arrival of these two types of waves at a seismograph is used to calculate the distance to the earthquake's source, with the entire network of seismographs providing a precise location through triangulation.
Additionally, the precision in determining the distance to the earthquake's source is affected by the measuring resolution of the seismographs and the known propagation speeds of the P-waves and S-waves.