Two variables are correlated whenever one changes while the other does not change. one increases while the other does not change. one decreases while the other does not change. both change together in a consistent way.

both change together in a consistent way.

Explanation:

If two variables are correlated then it means the change in the value of one variable is directly related with the charge in other variable.

As we know that the two variable if directly correlated then in that case change in one variable will affect other variable.

Like if one variable is increased then other will also increase and vice versa.

Similarly if two variables are inversely depends on each other then in that case the change in the one variable will inversely affect the other variable.

Like if we increase one variable then other variable will decrease and vice versa.

So here correct answer will be

both change together in a consistent way.

come closer and become far apart and become steam/gas

be subject to a force andchange its motion