For centuries, the chameleon's ability to change color was widely believed to be a camouflage mechanism, an adaptation primarily used to blend into its environment. Recent research, however, suggests that while camouflage plays a role, the primary function of color change in many chameleon species is actually thermoregulation and social signaling. Vibrant displays often communicate aggression or reproductive readiness, while darker hues absorb more heat. The author's primary purpose in this passage is to:
✓ Correct Answer: Option C
The passage highlights a shift from a 'widely believed' traditional view (camouflage) to 'recent research' suggesting the 'primary function' is thermoregulation and social signaling. Thus, the author's main purpose is to present new findings that challenge an old understanding.