How do they move our solar system?
Asteroids:
Meteors:
Comets:

Explanation:

The asteroids are orbiting the Sun, each one traveling around the Sun fast enough for the orbits not to degrade

Meteoroids travel around the Sun in a variety of orbits and at various speeds.

Comets go around the Sun in a highly elliptical orbit.

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.

the correct answer would be true friction causes the faults to slip or collide