**Explanation:**

The correct answer is option A, the Chameleon.

**Camouflage Phenomena:**
Camouflage is a natural adaptation that allows animals to blend in with their surroundings, making them less visible to predators or prey. This adaptation helps animals to hide and remain unnoticed, increasing their chances of survival.

**Chameleons and Camouflage:**
Chameleons are known for their remarkable ability to change the color of their skin. They have specialized skin cells called chromatophores that contain pigments. By expanding or contracting these cells, chameleons can change the color and pattern of their skin.

**How Chameleons Change Color:**
Chameleons change color for various reasons, including communication, temperature regulation, and camouflage. When a chameleon wants to camouflage itself, it adjusts its color and pattern to match its surroundings.

**Matching Their Surroundings:**
Chameleons have the ability to match the color and pattern of the objects or background they are on. For example, if a chameleon is sitting on a green leaf, it can change its skin color to green and display patterns that mimic the veins and texture of the leaf. This helps the chameleon to blend in and become almost invisible to predators or prey.

**Adapting to Different Environments:**
Chameleons are found in various habitats, including forests, deserts, and grasslands. They can adapt their camouflage to match the specific environment they are in. For instance, a chameleon in a forest may have green skin with brown patches to blend in with the foliage, while a chameleon in a desert may have a sandy color to match the desert landscape.

**Conclusion:**
In conclusion, the camouflage phenomenon is seen in animals like chameleons. Their ability to change color and pattern allows them to blend in with their surroundings, making them less visible and increasing their chances of survival.