Which of the following is a key factor that influence bac a , height b, eating certain foods c, body weight d, all of the above

The key factor that influences BAC(blood alcohol concentration) would be all of the above.
Height and body weight would increase the total amount of your body volume. The more your blood volume, the less alcohol concentration will be. Consuming food also delay alcohol absorption and make alcohol peak concentration less high.

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Explanation: mb