Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined bold word(s) in each of the following questions: 

Researchers have found that people are sleeping almost two fewer hours a night than they were in the 1960s, and our health is deteriorating as a result.

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ATNETWORK
ADMICRO
YOMEDIA
ZUNIA9