Inhaling, or breathing in, increases the size of the chest, which decreases air pressure inside the lungs.
Answer the question below:


Rich breathed out. When he breathes in or out his chest seems larger? 


Assuming that:

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multiple-choice question answering
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Inhaling, or breathing in, increases the size of the chest, which decreases air pressure inside the lungs.
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Answer the question below:


Rich breathed out. When he breathes in or out his chest seems larger? 


Assuming that:

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out