The final sounds of "laugh" and "cough and the initial sound of 'photo" are examples ofADentalsBAlveo-palatalsCVelarsDLabiodentalsAnswer: D. Labiodentals Read Explanation: The final sounds in "laugh" and "cough" (/f/) and the initial sound in "photo" (/f/) are labiodental sounds. This means they are produced by touching the lower lip to the upper teeth. Read more in App