The _____ theory of sleep says that sleep is a product of evolution.

• A. restorative
• B. activation-synthesis
• C. activation-information-mode
• D. adaptive

Answer: (D)

Verified step by step guidance

1. Identify the key concept in the question, which is the 'theory of sleep' that relates to evolution.
2. Review the list of theories provided: restorative, activation-synthesis, activation-information-mode, and adaptive.
3. Understand the basic premise of each theory: Restorative theory suggests sleep is for physical recovery, Activation-synthesis theory relates to dream formation, Activation-information-mode theory is about dream content processing, and Adaptive theory suggests sleep evolved as a survival mechanism.
4. Focus on the Adaptive theory, which posits that sleep patterns evolved to enhance survival by conserving energy and protecting organisms during periods of vulnerability.
5. Conclude that the Adaptive theory is the one that aligns with the evolutionary perspective of sleep, as it emphasizes the role of sleep in adaptation and survival.