Breathing involves ...$A$... during which atmospheric air is drawn in and ...$B$... by which the alveolar air is released out.
Choose the correct option for $A$ and $B$ to complete the given $NCERT$ statement.

  • A
    $A-$ expiration; $B-$ osmosis
  • B
    $A-$ expiration; $B-$ inspiration
  • C
    $A-$ inspiration; $B-$ expiration
  • D
    $A-$ inspiration; $B-$ diffusion

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