Which one of the following has the smallest d | vedclass

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(D) The human respiratory system consists of a branching network of tubes that decrease in diameter as they divide further into the lungs.$1$. The $Tr

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Respiratory bronchiole

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(D) The human respiratory system consists of a branching network of tubes that decrease in diameter as they divide further into the lungs.$1$. The $Trachea$ is the main airway,which is the widest.$2$. The $Trachea$ divides into the $Right$ and $Left$ $primary$ $bronchi$,which are narrower than the trachea.$3$. These bronchi further divide into smaller bronchioles.$4$. The $Respiratory$ $bronchiole$ is the terminal part of the conducting system before the alveolar ducts and alveoli,making it the smallest in diameter among the given options.

Which one of the following has the smallest diameter?

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