Wandering Around at Night, or Somnambulism
Puzzle 7 of Babysitting Piece of Cake Pack
Question is: Wandering Around at Night, or Somnambulism
and the answer is: SLEEPWALK
Word Meaning:
SLEEPWALK — (intransitive) To walk or perform other actions while sleeping; to somnambulate.
Definitions from Wiktionary.