To determine how the wavelength of music will appear when Malik turns the volume of the radio down, we need to consider how sound waves behave in relation to volume and amplitude.
When the volume of a sound is decreased, the amplitude of the sound waves decreases, but the frequency and wavelength itself remain unchanged in typical cases. The wavelength is inversely related to frequency as per the wave equation:
\[ v = f \lambda \]
where:
- \( v \) is the speed of sound (which is constant in a given medium),
- \( f \) is the frequency, and
- \( \lambda \) is the wavelength.
Since lowering the volume mainly affects the amplitude (not frequency), the wavelength does not change significantly.
Given the options A, B, C, and D show various graphs or representations of sound waves, you would look for the option that depicts unchanged wavelength but a lower amplitude (height of the waves).
Without seeing the provided images, the answer to your question would typically be the one that shows a wave with a similar shape (frequency) to the original but with a smaller amplitude.