For months, a local environmental group tried to stop the dredging of a river. Despite continuous protest, the group did not receive any support from the local residents

However, when the group gave a public statement about how the dredging process caused mercury to mix with the water, which could be fatal for children, the locals gave their full backing to the protest. Which communication theory did the environmental group use?
a. Framing
b. Gratifying
c. Dissonating
d. Diffusing

A