Question

10 which of the following theories was developed from observations that the universe is continuously expanding
theory of planetary motion
big bang theory
theory of gravitational force
theory of natural selection
skip 9/12 complete

Explanation:

The Big Bang Theory is based on the observation that the universe is expanding. The theory of planetary motion deals with the orbits of planets, the theory of gravitational force with the attraction between masses, and the theory of natural - selection is in the context of evolution in biology.

Answer:

Big Bang Theory