The correct answer is C. Distinguish between certain colours.
A color-blind person is someone who has difficulty distinguishing between certain colors. This is caused by a defect in the cones, which are the cells in the eye that are responsible for color vision. There are three types of cones, each of which is sensitive to a different range of wavelengths of light. People who are color-blind have cones that are either missing or not working properly. This can make it difficult for them to see certain colors, or to distinguish between different shades of the same color.
Option A is incorrect because color-blind people can still see distant objects. However, they may have difficulty distinguishing between certain colors in the distance.
Option B is incorrect because color-blind people can still see black. However, they may have difficulty distinguishing between black and other dark colors.
Option D is incorrect because color-blind people can still have persistence of vision. Persistence of vision is the phenomenon where an image continues to appear in the eye after the stimulus has been removed. This is caused by the persistence of retinal images, which is the time it takes for the cells in the retina to stop firing after they have been stimulated by light.