A college student comes to the student health center complaining of difficulty in concentrating during class and while studying. The diet that would contribute to this problem is one that con-tains mostly:
a. fruit and vegetables.
b. lean meat and fish.
c. sandwiches and diet drinks.
d. pasta and chicken.
B
Carbohydrates are the only source of fuel for the brain and central nervous system. A diet low in carbohydrates, such as a diet mostly of meat and fish, could affect brain function. Fruits and vegetables, sandwiches and diet drinks, and pasta and chicken have moderate levels of needed carbohydrates.
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