According to the Kinetic Theory of Gases, the average kinetic energy of gas molecules is directly proportional to the absolute temperature ($K \propto T$). Therefore, raising the temperature results in an increase in the kinetic energy of the molecules. Option 4 is incorrect because, for a gas in a rigid container (constant volume), an increase in temperature leads to an increase in pressure (Gay-Lussac's Law). Option 2 is incorrect as the mass of the gas remains constant in a closed container. Option 1 is incorrect because intermolecular distance does not decrease; it remains constant in a fixed volume or increases if expansion occurs.