Answer:
Concerning the place of articulation, the initial sound of thin is a voiceless dental.
Step-by-step explanation:
Place of articulation is one of the three dimensions used to classify consonantal sounds (as well as voicing and manner of articulation), and refers to the area of the mouth where the constriction happens.
Dental sounds are oral and can be voiced or voiceless. They are called apico-dental sounds because the tip of the tongue, known as the lower articulator, articulates with the upper front teeth through soft contact. The symbol of this sound is [θ], called ‘theta’.