The correct option is B 1→b,2→d,3→c,4→a
Epiglottis is present just after the nasal cavity and it differentiates the food pipe and the wind pipe.
Pharynx is present in between the windpipe and the nasal cavity and is commonly referred to as the throat.
Larynx is the voice box otherwise called as Adam’s apple. It is made up of two flap-like muscles and is located in the front part of the neck.
After the larynx, trachea is the next part of respiratory system. It is about 4-5 inches in length and is surrounded by C-shaped cartilaginous rings which help in the prevention of collapse of the tracheal structure.