Answer:
The correct answer is D. Hubble's law can be used to determine the distance of a cluster of galaxies very far from the local group.
Explanation:
Hubble's law describes the observation in physical cosmology that the rate at which different galaxies move away from us is proportional to their distance from the Earth. The law was created by the American astronomer Edwin Hubble.
He discovered that, the farther away the galaxies are from our planet, the faster they move away from us. It is the first observable basis for the expansion of the universe and today serves as a partial proof that is often cited as support for the Big Bang theory.
