The average amount of sleep an adult gets is 8 hours. Everyone is different, however; where some adults function off of 6 hours, others need at least 9 hours or more to feel healthy and awake. 
What is the \uline{\textbf{average}} amount of sleep adults get each night? 

(1) 5 hours 
(2) 6 hours 
(3) 10 hours 
(4) 8 hours 
(5) 12 hours 