Barry knew Alice was tired, but he was surprised that the argument between their three-year-old twin boys did not awaken her. She had not been asleep very long and occasionally changed her position, but did not wake. Alice is probably in:
1.stage 2 sleep.
2.stage 3 sleep.
3.stage 4 sleep.
4.REM sleep.
3.STAGE 4 SLEEP
WHY BECAUSE SHE'S IN A DEEP SLEEP