Answer would be B. Earthquakes happen most of the time when a volcano is about to erupt.
The chronometer is a device to measure time in a period of time, therefore not a correct answer.
The Boomerang Nebula located 5,000 light years away from our home planet is measured -457.87*F or -272.15*C in temperature. It is believed to be a star system in the constellation Centaurus.
