Which of the following would not be an example of the barter system? a) you sweep and clean a go-cart track in exchange for rides. b) you trade a bag of candy with a friend for comic books. c) a salesperson hands you a shirt worth $10, and you hand him a check for $10. d) your neighbor lets you use his driveway for skateboarding, and you him paint his porch.

C) A salesperson hands you a shirt worth $10, and you hand him a check for $10.

NOT B

new communications technology has affected the way social movements are organized because nowadays, social movements rely on social networks and the media to get different people with a similar way of thinking in contact, and thus, get them to mobilize for a greater cause.

individuals only participate in collective action when they feel identified with it. is in this aspect that social media becomes relevant, because it guarantees communication among all individuals and organizes the social actions that are going to be carried out, i.e., the social movements.

in addition, being covered by the media is important to validate the message and make it relevant in the social agenda, as well as to reach more people who can share interests, appealing to public sympathy for their cause.

in conclusion, it is by social networks and social media that social movement is given birth; by connecting different individuals with similar ideas and organizing them to mobilize for a greater cause.