Which of the Following Was a Consumer Insight That Helped

Which of the following was a consumer insight that helped the 'Earth Hour' campaign succeed?

A) Consumers would not be convinced unless the message was negative.
B) Consumers would respond best if they recognised the advertiser behind the event.
C) Consumers would be more interested in a protest than a party.
D) Consumers would be more likely to act if the task was easy.
E) Consumers would feel overwhelmed if the task was specific.