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B
Cerebrum
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C
Liver
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D
Cerebellum
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Solution
The correct option is D Cerebellum
The organ most affected by alcohol is cerebellum which is part of brain. When alcohol is absorbed into blood stream, it reaches brain cells because it can easily cross the barrier between brain and blood. It damages brain cells specially of cerebellum. Cerebellum controls balance and movement of body and other motor functions. Due to this, person loses self control and is not even able to stand properly. Loss of muscle coordination occurs due to which speech becomes incoherent. Alcohol also increases reaction time due to which body takes more time to respond to stimulus.