Correct Response: A. Bright and fluorescent-colored clothing are the most eye-catching and likely to draw the attention of a motorist to the presence of someone on a bicycle during daylight hours. A headlight (B), effective at night, provides only a small spot of light during the day and no visual protection from behind. A white or light-colored jacket or helmet (C) is not as visible as more brightly colored clothing and may not be as easily distinguishable from a light-colored background. A small flag (D) will not be as noticeable as a bicyclist's full torso clad in a bright color.