An observer took a time-exposure photograph of polaris and five nearby stars. how many hours were required to show these star paths?

It took 4 hours to show the star paths. Polaris is a start that is in the constellation known as Ursa Minor. It is the brightest star in that constellation. When observing stars from the Earth, it is important to remember that the stars are moving from east to west. Thus, it takes 4 hours for the Polaris (and subsequent star paths) to move as it is located in the North.

Answer b is the answet

Answer volcanic outgassing;