Respuesta :
The poster demonstrates the use of the bandwagon technique by C. The phrase “Hand washing is IN” means that it is in fashion for people to wash their hands.
Bandwagon technique means trying to persuade everyone that a particular thing is good and therefore everyone they should join in or do the same thing as the others.
The technique suggests that if many people are doing the same thing, then others should also join in and do the same thing. Therefore, the phrase “Hand washing is IN” means that it is in fashion for people to wash their hands.
Learn more about technique on:
https://brainly.com/question/13705434