The place and man ner of articulati on of vert nvert a. retroflex fricative b. nasal affricate c. velar nasal d. lateral velar

The correct answer is c. velar nasal.<br /><br />The symbol $\vert n\vert$ represents the velar nasal sound, which is produced by lowering the soft palate (velum) while allowing air to pass through the nasal cavity. This sound is commonly found in languages such as English, where it is represented by the letter "ng" as in the word "sing."<br /><br />Option a, retroflex fricative, is not the correct answer because the velar nasal is not produced by creating a narrow constriction in the oral cavity and directing the airflow backward, which is characteristic of retroflex fricatives.<br /><br />Option b, nasal affricate, is also not the correct answer because the velar nasal is not produced by a combination of a stop and a fricative sound, which is characteristic of nasal affricates.<br /><br />Option d, lateral velar, is not the correct answer because the velar nasal is not produced by directing the airflow laterally through the oral cavity, which is characteristic of lateral sounds.<br /><br />Therefore, the correct answer is c. velar nasal, as it accurately describes the place and manner of articulation for the symbol $\vert n\vert$.