The gases inside the bag would expand. Hence, option A is correct.
What is gas?
Gas is a sample of matter that conforms to the shape of a container in which it is held.
As the atmospheric pressure decreases with an increase in altitude, when a sealed bag of chips is taken to a higher altitude then the pressure of the gases inside the bag becomes greater than the outer atmospheric pressure and apply pressure on the side covering of the chips bag due to which the chips bag expand.
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