C) It is a fact in nature which is not supported by data.
D) It is a fact which is observable to all and remains undisputed.
<h2>Answer</h2>
The answer is (D)
<h2>Explanation</h2>
Old scientists believed that the earth is stationary and the sun revolves around the earth. Then the Newton came in this field and told if the earth is stationary why the things from the space fall toward the earth. He believed in Heliocentrism model and told that the earth is orbiting around the sun and its motion is creating the gravitational pull to attract the things toward itself. But this puzzle is still under consideration to know better about sun and earth. So, the option (D) will be the answer to it.
All of the other events can be explained by colliding worlds in the early solar system but the asteroid belt can't. The asteroid belt originated from the primitive solar nebula as a congregation of planetesimals, which were the precursors of the protoplanets.
