Concept:The animal in the diagram shows countershading colouration, where the upper surface is darker and the lower surface is lighter.Explanation:Countershading is a protective adaptation common in animals like fish.It makes the animal less visible to predators from above and below.The darker back blends with the dark water floor or surroundings, while the lighter belly blends with the bright water surface.This reduces the chance of being seen.Answer:C. countershading colouration
