★7. It really does matter if you get enough sleep. We need sleep to think clearly, react quickly, and create memories. Studies show that people who are taught mentally challenging tasks do better aft er a good night’s sleep. Other research suggests that sleep is needed for creative problem solving.

Each of the following passages contains a single argument. Using the letters “P”

and “C,” identify the premises and conclusion of each argument, writing premises fi rst and conclusion last. List the premises in the order in which they make the most sense (usually the order in which they occur), and write both premises and conclusion in the form of separate declarative sentences. Indicator words may be eliminated once premises and conclusion have been appropriately labeled. Th e exercises marked with a star are answered in the back of the book.