James Has Been Sleeping for About 90 Minutes When His

question 35

Multiple Choice

James has been sleeping for about 90 minutes when his brain shows rapid, irregular waves. His blood pressure rises, his heart rate increases, and his skeletal muscles go limp. Which of the following is the most likely conclusion?

• A) James is chronically sleep-deprived and his sleep, like his daytime activities, is abnormal.
• B) James is experiencing physiological changes that are normal for the third stage of sleep.
• C) James is experiencing unusual sleep because during the day he engaged in strenuous physical activities.
• D) James is experiencing physiological changes that are normal during REM sleep.

---

Definitions:

Dense Coastal Fog

A type of fog formed when warm, moist air moves over a cooler coastal surface, leading to the air's cooling and condensation near the ground.

Temperate Rain Forest

A forest ecosystem found in temperate zones characterized by high rainfall, dense canopies, and a biodiverse set of plant and animal species.

Hooved Mammals

Mammals belonging to the order Artiodactyla or Perissodactyla, characterized by having hooves; includes animals such as horses, deer, and cattle.

Savanna

A mixed ecosystem characterized by the coexistence of grasses with scattered trees or shrubs, usually found in regions with a seasonal rain pattern.