The correct answer is: A red shirt selectively absorbs red wavelengths of visible light and scatters the rest.
When light hits an object, some of the light is absorbed, some of the light is reflected, and some of the light is scattered. The color of an object is determined by the wavelengths of light that are reflected or scattered.
A red shirt absorbs all wavelengths of light except red light. The red light is reflected or scattered, which is why we see the shirt as red.
Option B is incorrect because a red shirt does not scatter red light. It absorbs red light and reflects or scatters all other wavelengths of light.