Explanation
The correct answer is (C) 20 Hz - 20 kHz.
The hearing range of a normal healthy person typically extends from around 20 Hz (Hertz) to 20,000 Hz, or 20 kHz (Kilohertz). This range covers the frequencies of sound that are audible to the human ear. The lower end of the range (20 Hz) corresponds to lower-pitched sounds, such as deep bass tones, while the upper end (20 kHz) corresponds to higher-pitched sounds, such as the squeal of a high-pitched whistle or the chirping of birds. It's important to note that the hearing range can vary slightly among individuals and may be influenced by factors such as age and exposure to loud noises.
