The r stands for rest. Rest is important because it fuels your brain.
B) The species would decrease in number and eventually die off.
1) Physiological need, such as needs for food, sleep, and air
2) Safety or the needs for security and protection
3) Belonging and love
4) Needs for self esteem and self respect
5) Needs concerning creative self growth, engendered from fulfillment of potential and meaning in life
B. Sleep Disorders because thats mental