Solution:The question requires ordering nasal consonants based on the place of articulation, from front to back of the mouth. Here’s a breakdown of each sound:
(c) Labial Nasal (m): Produced by closing both lips, so it is the front-most articulation. It is the sound you make when pronouncing “m” in “map.”
(a) Dental Nasal (n): Produced with the tongue touching the upper teeth. This nasal sound is articulated slightly farther back than the labial nasal.
(b) Retroflex Nasal: Created by curling the tongue back so that it touches the area behind the alveolar ridge, making it more retracted than dental.
(d) Palatal Nasal: Produced with the body of the tongue against the hard palate, further back in the mouth. This is represented in sounds like “ñ” in Spanish “niño.”
(e) Velar Nasal: Produced with the back of the tongue touching the soft palate (velum). This sound is in English words ending with “-ng,” like “sing.”
Arranging from the front to the back, the correct order is m, n, retroflex nasal, palatal nasal, velar nasal.