Answer:
appeal to action
Step-by-step explanation:
Appeal to action -
Appeal to action is a method for concluding the speech in which the speaker urges and tell the audience to act and give a role to play after the talks are over. The speaker gives strong and concrete tasks to the audience in order to tackle issues and fixing them.
Thus, Josina announcing the audience to do something worthwhile and take steps when one sees flyers around the campus announcing blood drive and help to save someone's life. This method is appeal to action which Josina is using.