The correct answer is D. 20 to 20,000 Hz.
The human hearing range is the range of frequencies that humans can hear. The lower limit is about 20 Hz, and the upper limit is about 20,000 Hz. This means that humans can hear sounds with frequencies between 20 and 20,000 cycles per second.
The human hearing range varies from person to person. Some people can hear higher frequencies than others. The hearing range also decreases with age. As people get older, they tend to lose the ability to hear high-pitched sounds.
The human hearing range is important for communication. We use sound to communicate with each other, and we need to be able to hear a wide range of frequencies in order to understand what is being said.
The human hearing range is also important for music. Music is made up of sounds of different frequencies, and we need to be able to hear all of these frequencies in order to appreciate music.
The human hearing range is a fascinating and important part of our lives. It allows us to communicate with each other, enjoy music, and experience the world around us.
Here is a brief explanation of each option:
- Option A: 50 to 50,000 Hz. This is not the correct answer because the human hearing range is actually much smaller than this. Humans can only hear sounds with frequencies between 20 and 20,000 Hz.
- Option B: 40 to 40,000 Hz. This is not the correct answer because the human hearing range is actually much smaller than this. Humans can only hear sounds with frequencies between 20 and 20,000 Hz.
- Option C: 30 to 30,000 Hz. This is not the correct answer because the human hearing range is actually much smaller than this. Humans can only hear sounds with frequencies between 20 and 20,000 Hz.
- Option D: 20 to 20,000 Hz. This is the correct answer because this is the range of frequencies that humans can hear.