Charlene Is Twelve,and Her Elderly Aunt Has Come for a Visit.The

question 161

Multiple Choice

Charlene is twelve,and her elderly aunt has come for a visit.The aunt is using the spare bed in Charlene's room.Several times during the night the aunt awakens briefly,and then falls back to sleep.Charlene doesn't awaken at all during the night.This difference in sleep patterns can best be explained by research that shows

• A) during adulthood the proportion of REM sleep gradually declines.
• B) during adulthood the proportion of slow-wave sleep increases significantly.
• C) the elderly are more affected by jet lag and shifts in their circadian rhythm.
• D) during adulthood the proportion of slow-wave sleep gradually declines.

---

Definitions:

Descriptive Linguistics

The branch of linguistics that involves describing the structure and function of languages without making judgments about their correctness or superiority.

Instinctive Calls

Natural vocal behaviors exhibited by animals, often used for communication within the same species, guided by inherent and genetic factors.

Linguistic Repertoire

The range of language varieties, styles, and practices that an individual can use, reflecting their social identity and situational contexts.

Age of Exploration

A historical period from the 15th to the 17th century marked by European global exploration and the establishment of overseas colonies.