What is the function of region labelled as ‘A’ in the given diagram?
a)	Passage to lungs	b)	Connection of larynx	c)	Sound producing	d)	Warm providing

(c)

Larynx is present on tip of trachea and is made up of cartilages. It is a short tubular chamber and opens into the laryngopharynx by a slit-like aperture called glottis. It is more prominent in male than female due to male hormones. Inside the larynx, vocal cords are present. Sound is produced by true vocal cords.