Which of the following serves as a common passage for both swallowing food and breathing?

Identify which respiratory structure possesses the following features and choose the correct option accordingly.
$I.$ Found in mammals
$II.$ Highly muscular and fibrous partition,elevated towards the thorax like a dome
$III.$ Separates thoracic and abdominal cavity

In humans,the nasal cavity is separated from the buccal cavity by a bone known as:

The larynx is found in:

Match the following columns:

Column-$I$	Column-$II$
$a$. Larynx	$p$. Epiglottis
$b$. Trachea	$q$. Alveoli
$c$. Alveolus	$r$. Sound box
$d$. Epiglottis	$s$. Air passage tube
	$t$. Common passage

Which of the following has the most well-developed respiratory system?