Question

Which of the following modes is utilized in the production of sound by humans?
A. vibrating membranes
B. vibrating plates
C. vibrating strings
D. vibrating air columns

Answer 1

Answer:

the correct answer is the option number D) VIBRATING AIR COLUMNS.

Answer 2

A. vibrating membranes

Explanation:

The vocal cords are 2 bands of smooth muscle tissue found in the larynx. The larynx or the voice box is set in the neck at the top of the trachea (windpipe). The vocal cords vibrate and air passes through the cords from the lungs to produce the sound of your voice. The vocal folds, also known popularly as vocal cords, are composed of twin infoldings of mucous membrane stretched horizontally across the larynx. They vibrate, modulating the flow of air being expelled from the lungs during phonation. The male vocal folds are between 17 mm and 25 mm in length. The female vocal folds are between 12.5 mm and 17.5 mm long. The difference in vocal fold size between men and women means that their voices have a different pitch.  

Option A is the answer.