C, factory, is the correct answer.
As x increases y must decrease to keep their product constant.
Option A indicates a direct relationship; as x increases y must also increase to keep their ratio constant.
The answer to this question is operant conditioning.
Operant conditioning is based on exposing someone to possitive stimuli if they display desired behavior and expose them to negative stimuli if they displaye unwanted behavior.
Eventually, they will associate the negative stimuli with unwanted behavior and naturally avoid it.
B: asteroids.
In the early days of the Solar System, the gravitational influence of Jupiter caused the formation of the Asteroid Belt: in this region of the Solar System, there was enough material to form planets, but then Jupiter's gravity increased the velocity of this potentially new planets, so instead of accrete they collide into each other, forming the asteroids we can observe today.
