Step 1 : Introduction to the question "4. Many people who have trouble breathing at night may use a special machine to help them. It is often called a CPAP machine, but what does CPAP stand for?"
...1. Consecutive Primes in Arithmetic Progression 2. Continuous Positive Airway Pressure 3. Coalition for the Prevention of Alcohol Problems 4. Center for Public Administration and Policy Even though all answers can be abbreviated as CPAP, only one has anything to do with sleep! A CPAP machine forces air into the wearer's nose and mouth, allowing oxygen to get to their lungs. It is especially helpful to those who have sleep apnea.
