Which is a more scientific way of measuring earthquake? why?

Earthquakes are measured using seismographs, which monitor the seismic waves that travel through the Earth after an earthquake strikes. Scientists used the Richter Scale for many years but now largely follow the “moment magnitude scale,” which the U.S. Geological Survey says is a more accurate measure of size.

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic

a.   mass number from atomic number