The changes possibly caused by the cellphones are mainly concerned with ______. A. the mobility of the mind and the body B. the smallest units of the brain C. the arteries of the brain D.

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The changes possibly caused by the cellphones are mainly concerned with ______.

the mobility of the mind and the body

the smallest units of the brain

the arteries of the brain

the resident memory

Giải thích

Đáp án B

Giải thích: “On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones”. Brain cells = the smallest units of the brain: tế bào não