The major contributor to 80-year-old Mr.Samson's change in cognitive performance over the last few years is
A) the slowdown of his central nervous system functioning.
B) age-related declines in his reasoning ability.
C) declines in his spatial abilities.
D) All of these

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The Answer of The major contributor to 80-year-old Mr.Samson's change in cognitive performance over the last few years is
A) the slowdown of his central nervous system functioning.
B) age-related declines in his reasoning ability.
C) declines in his spatial abilities.
D) All of these

The Major Contributor to 80-Year-Old Mr