Answer:
The correct answer is: A) Asteroid belt.
Explanation:
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.
Answer:
D) Phosphorous catches fire in air.
It is the mongols, this answer is
Water which collects as droplets on a cold surface when humid air is in contact with it