Passive organs of speech are: a. the teeth, the teeth ridge and alveolar ridge, the hard palate, the walls of the resonator;

b. the lips, the teeth ridge and alveolar ridge, the hard palate, the walls of the resonator;

c. the teeth, the teeth ridge and alveolar ridge, the soft palate, the walls of the resonator;

d. the tongue, the teeth ridge and alveolar ridge, the hard palate, the walls of the resonator;

e. the teeth, the teeth ridge and the vocal cords, the hard palate, the walls of the resonator;

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