When the net force on an object increases, how dose the object's acceleration change?

there are three possibilities as net force increases acceleration increases, as net force increases mass increases, as net force increases both mass and acceleration increase. From your question u are asking As net force the increase acceleration increases.

Explanation:

This is due to acceleration and force being directly proportional to each other according to the equation F=ma because F and a are both in the numerator they must be directly proportional