Explanation:

The correct answer is option B, which states that the adaptation mechanism of the chameleon is to change its colors to merge with its surroundings. This unique ability allows the chameleon to blend in with its environment, providing it with camouflage and protection from predators.

Adaptation Mechanism:
The chameleon is known for its remarkable ability to change its skin color. This adaptation mechanism is primarily used for communication, camouflage, and thermoregulation.

Communication:
Chameleons use their color-changing ability as a means of communication with other chameleons. They can display vibrant colors to show aggression or dominance, or they can change to dull colors to signal submission or fear.

Camouflage:
The primary purpose of the chameleon's color-changing ability is camouflage. By changing its skin color, the chameleon can blend seamlessly with its surroundings, making it difficult for predators to spot them. For example, if a chameleon is sitting on a green leaf, it can change its skin color to green, making it nearly invisible to predators.

Thermoregulation:
Another function of the chameleon's color-changing ability is thermoregulation. By altering its skin color, the chameleon can absorb or reflect sunlight, regulating its body temperature. Darker colors absorb more heat, while lighter colors reflect heat. This allows the chameleon to maintain its body temperature in different environments.

How does the chameleon change its colors?
The chameleon changes its skin color through specialized cells called chromatophores. These cells contain pigments that can expand or contract, changing the color and pattern of the chameleon's skin. The chromatophores are controlled by the chameleon's nervous system and respond to various external and internal stimuli.

Conclusion:
In conclusion, the chameleon's adaptation mechanism to change its colors provides it with the ability to communicate, camouflage, and thermoregulate. This unique ability helps the chameleon survive in its environment by blending in with its surroundings and avoiding predators.