Class 5 Practice Results - #1. Which thing can reduce the effect of alcohol? Listening to Radio or CD loudly can reduce the effect of alcohol. Listening to Radio or CD loudly can reduce the effect of alcohol. Coffee reduces the effect of alcohol. Coffee reduces the effect of alcohol. Beer does not impair judgment as much as other alcoholic drinks do. Beer does not impair judgment as much as other alcoholic drinks do. Only time can reduce the effect of alcohol. Only time can reduce the effect of alcohol. Next