## Core Concept
The human ear is sensitive to sound waves, which are a form of mechanical energy. The ear's sensitivity to sound frequencies allows us to perceive a wide range of sounds. The sensitivity of the ear is usually measured in terms of the decibel (dB) level.

## Why the Correct Answer is Right
The correct answer, , indicates that the ear is sensitive to sound waves within a specific range of frequencies, typically between 20 Hz and 20,000 Hz. This range encompasses the spectrum of human hearing, from low-pitched sounds to high-pitched sounds. The ear's sensitivity to this range allows us to perceive speech, music, and other environmental sounds.

## Why Each Wrong Option is Incorrect
* **Option A:** This option is incorrect because it does not accurately represent the range of frequencies to which the ear is sensitive.
* **Option B:** This option is incorrect because it is not a correct representation of the ear's sensitivity.
* **Option D:** This option is incorrect because it does not accurately describe the ear's sensitivity to sound waves.

## Clinical Pearl / High-Yield Fact
A key point to remember is that the range of human hearing is typically between 20 Hz and 20,000 Hz. However, it's also important to note that the ear's sensitivity to sound is not uniform across this range; it is more sensitive to frequencies between 1,000 Hz and 4,000 Hz, which is the range of human speech.

**Correct Answer:** .