Answer;
A: the composition of the inner and outer planets, current observations of star formation, and the motion of the solar system
Step-by-step explanation;
The types of objects found within the solar system provide significant clues and evidence to support the Nebular Theory.
-First; the types of Planets and their distributions: with the Rocky planets being close to the Sun, and Gas Giants planets being far from the Sun, Dwarf Planets or Plutoids, a class of Dwarf planets, are found far from the Sun.
-Comets, asteroids, and meteorites recovered on Earth also provide a number of clues and evidence of Nebular-type development. And the motions of most solar system objects orbit and rotate in an organized fashion.