Which two conditions can limit the usefulness of the kinetic-molecular theory in describing gas behavior? high pressure and low temperatures high pressure and medium temperatures low pressure and low temperatures low pressure and medium temperatures

High pressure and low temperatures are the constraints for KMT

Kinetic molecular theory is actually designed for the ideal gas behavior and more specifically, it is used to explain macroscopic properties of a gas, such as pressure and temperature, in terms of its microscopic components, such as atoms. Similarly we know that at low temperatures or high pressures, real gases deviate significantly from ideal gas behavior so the two conditions that can limit the usefulness of the kinetic-molecular theory in describing gas behavior are "high pressure" and "low temperatures".

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).

level 4 to level 2 : ))