When we breathe in, our lungs ___.

expands

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remains same

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contracts

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None of the above

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Solution

The correct option is A expands
When we breathe in, our lungs expands and it contracts when we breathe out.

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When we breathe in, our lungs ___.

The correct option is A expandsWhen we breathe in, our lungs expands and it contracts when we breathe out.

The correct option is A expands
When we breathe in, our lungs expands and it contracts when we breathe out.