How many types of photoreceptors are active when you are watching a movie in the dark? A. 0 B. 1 C. 2 D. 3

The correct answer is C. 2.<br /><br />When you are watching a movie in the dark, both types of photoreceptors in the human eye, rods and cones, are active. Rods are responsible for vision in low light conditions, while cones are responsible for color vision and visual acuity. In a dark environment, rods are more active and provide vision, while cones are less active.