Question

why do objects appear to be different colors? they reflect certain wavelengths of light and absorb others. they refract light differently. they diffract light differently. they emit different wavelengths of light.

Explanation:

Objects appear colored because they interact with light. Most objects (non - luminous) don't emit light. Refraction (bending of light) and diffraction (spreading of light) don't determine color. The key is reflection and absorption: an object reflects the wavelengths (colors) we see and absorbs others. For example, a red apple reflects red - wavelength light and absorbs others. So the correct reason is that they reflect certain wavelengths of light and absorb others.

Answer:

The option "They reflect certain wavelengths of light and absorb others." (the red - colored option box)