What is the place and manner of articulation for the sound/N/? alveolar nasal velar nasal alveolar glide velar stop

The correct answer is alveolar nasal. The sound /N/ is produced by lowering the soft palate (velum) to allow air to pass through the nasal cavity, while the tongue touches the alveolar ridge behind the upper front teeth. This combination of lowering the velum and placing the tongue on the alveolar ridge creates the nasal sound /N/.