A) the performancetests used in the study of sleep deficit
B) specialbranches of knowledge that are being studied
C) peoplewhose behavior or reactions are being studied
D) thepsychological consequences of sleep deficit
5. It can be concluded fromthe passage that one should sleep as many hours as is necessary to ______ .
A) improveones memory dramatically
B) beconsidered dynamic by other people
C) maintainones daily schedule
D) feelenergetic and perform adequately
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