8. Which frequency range does human ear sense? A. 50 Hertz (Hz) to 100,000 Hertz C. 20 Hertz (Hz) to 40,000 Hertz B. 30 Hertz (Hz) to 50,000 Hertz D. 20 Hertz (Hz) to 20,000 Hertz
Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz. (Human infants can actually hear frequencies slightly higher than 20 kHz, but lose some high-frequency sensitivity as they mature; the upper limit in average adults is often closer to 15–17 kHz.)
