Chris jordan used 2.4 million pieces of plastic in his artwork gyre. these represent the number of:
a. followers the artist has on twitter.
b. women living in poverty in brazil.
c. pounds of plastic trash that enters the world’s oceans every hour.
d. people that him create the artwork.
e. toothbrushes used and thrown away every year by the us.

C.

Explanation:

This represent the number of pieces of plastic put in the ocean every hour. Jordan's piece is intended for the viewer to think about their consumption of plastic materials, and how this affects the world in general. Showing the amount of plastic that enters the ocean (simply by time), this ecological problem becomes tangible and personal, and it is expected effects of the change.

i believe their role is to instruct certain sections on when they are to join and when they are to stop