the absolute tempertaure of a gas is increased four times while maintaining a constant volume. what happens to the pressure of the gas

The pressure of gas also increases.

Explanation:

According to Boyle's law, when the T of gas increases, the P of gas also increases.

Think about it this way: What happens to a bottle of seltzer water when left in a car on a sweltering summer day? It busts. Why? There is CO2 gas in seltzer water. When the temperature in the car rises, so does the pressure in the seltzer bottle. This is why it explodes.