What is the average distance between the sun and earth?

150 million km

The correct answer is Option (3) - 150 million km

An astronomical unit is the average distance between the Earth and the Sun. Scientists figured out a while ago that writing out those huge numbers wasn't the best use of their time, so they invented the Astronomical Unit (AU). One AU, about 93 million miles (150 million kilometers), represents the average distance from the Sun to the Earth