Can someone please explain this better please and why it can't be the wrong answer....
P: Marketing campaigns warning young people of the dangers of smoking and encouraging these people to quit have increased in frequency over the last 30 years.
WRONG ANSWER= (A): (Some marketing campaigns have been used to effectively deter certain activities.)
CORRECT ANSWER= (A): Marketing campaigns pointing out the dangers of an activity are effective deterrents.
C: Some marketing campaigns that have increased in frequency over the last three decades are effective deterrents.