A Recent Meta-Analysis of the Effectiveness of Anti-Substance-Abuse Campaigns Found

A recent meta-analysis of the effectiveness of anti-substance-abuse campaigns found that

A) the most effective medium for displaying ads was print (newspapers and magazines) .
B) the most effective medium for displaying ads was broadcast (radio and television) .
C) the most effective medium for displaying ads was electronic (Internet and wireless) .
D) the most effective medium for displaying ads was street settings (billboards and automobiles) .
E) none of the media were effective in changing attitudes.

Correct Answer:

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