Final answer:
When the volume of a gas is a) tripled at a constant temperature, Boyle's Law dictates that the pressure will be one third of its initial value.
Step-by-step explanation:
If the volume of a fixed amount of gas is tripled at constant temperature, according to Boyle's Law, which states that pressure and volume are inversely proportional at constant temperature, the pressure will be inversely changed relative to the change in volume. Thus, if the volume is tripled, the pressure will be divided by three. Therefore, the pressure will be one third of its original value.