In terms of place of articulation, the sounds /f/ and /v/ are:ADentalBAlveolarCLabiodentalDBilabialAnswer: C. Labiodental Read Explanation: Labiodental: These sounds are produced by placing the lower lip against the upper teeth./f/ is a voiceless labiodental fricative (as in "fish")./v/ is a voiced labiodental fricative (as in "van"). Read more in App