Final answer:
The larynx contains the vocal cords, which are responsible for creating sound by vibrating when air passes through them. The correct answer is a) Vocal cords.
Step-by-step explanation:
The larynx contains the vocal cords, which are connective tissue bands that tighten and vibrate to create sound when air moves past them. The correct answer to the question is a) Vocal cords. The trachea, or windpipe, is separate from the vocal cords and acts as a passageway for air to enter and exit the lungs. The epiglottis is a piece of elastic cartilage that covers the opening of the trachea, while the bronchi are divisions of the trachea that connect to the lungs.
Within the larynx, the true vocal cords are white, membranous folds attached by muscle to the thyroid and arytenoid cartilages. The inner edges of these cords are free to oscillate, thus producing sound. Different sizes of these folds in individuals contribute to different pitch ranges in voices, with male vocal cords typically larger, producing a deeper voice.