All of the Following Are Techniques Used by Interest Groups

All of the following are techniques used by interest groups to involve the general public EXCEPT

A) attempting to mobilize large numbers of constituents to write, phone, or send e-mails and tweets to their legislators.
B) using demonstrations, rallies, and marches.
C) violently protesting so officials will know the unhappiness of the public.
D) getting people to boycott a business.
E) commissioning polls and publicizing the results for the public to see.