In which situation is pathos the best rhetorical tool

Pathos is the rhetorical tool used by a speaker to persuade the audience. The speaker appeals to the audience's emotions, basically.

In these situations, pathos is the best tool:

In commercials: a) a Charity Organization may resort to showing pictures of starving children in Africa. In this way the audience will feel moved and send money to the organization ; b) A washing machine company may use a conversation bewteen mother and daughter. Through this converstaion, the mother tells the daughter that she has used this washing-machine brand all her life. Consequently, the daughter will continue with her mother's tradition. The audience will get easily convinced.Political propaganda. A political candidate will picture himself hugging poor children or pensioners during his campaign. This is to show the audience he has got a warm heart and , therefore, the audience may vote for him.