When a grassroots campaign is artificially orchestrated to appear that constituents care about an issue when in reality they do not, it is called:

 The correct answer is :  astroturf lobbying

Explanation:    Astroturf is a practice and tactic used in politics to create the appearance that the bases support a position. Electoral propaganda and commercial announcements are intended to show a lot of spontaneity with paid actors to give the impression that everything is born from a relationship with the social environment.

answer; researchers typically cannot control people's sexual behaviors as would be necessary in an experiment;

answer; primary source information;