The correct answer
would be C. The volume of the balloon will decrease. As depicted in Charles’
Law which states that volume and temperature are directly proportional to each other,
when the pressure of the gas is at a constant. When this theory is applied, the
balloon will decrease in volume when it is exposed to cold air because the gas pressure
inside the balloon remains the same. It is easier to remember this concept with
the equation V/T = K where V is volume, T is Temperature and K is constant
pressure.