The technique of this ad is plain-folks appeal because it is an everyday housewife who isn't bothered by ration points being patriotic.

The speaker is the everyday wife who takes care of the family.

Plain-Folks Appeal

The target audience is other moms who don't have jobs and watch over their kids.

The overall purpose of the ad is to convince women that they can handle rations during the rough time.

The technique of plain-folks appeal helps sell the overall idea that women can handle times of rationing and not worrying because if anyone can do it and stay calm than other ordinary people will be in good condition too.