I believe the answer is c. stems from how many people make a lower wage, or minimum wage, that number is getting larger. where as executive positions take more time in school, even on-line classes, to achieve a bachelor's in they're field. working peeps with children to support have no other choice at times. most couples with children work a Ft + pt work to make it financially easier. consumer price index shows what a consumer is willing to pay, or trying to pay less to get a squeek more 4 they're $$..