The Popularity of Systems Such as Physiognomy and Phrenology Had

The popularity of systems such as physiognomy and phrenology had such a significant impact on the everyday lives of Americans because

A) they provided everyday people with a psychological language and the ability to examine themselves in a psychological way while using practical knowledge.
B) they were quick and easy systems with which to learn the social and mental characteristics of others and were particularly useful when looking for a mate.
C) phrenology offered insight into how the brain worked, which helped people understand their own behaviors.
D) having phrenological and physiognomic readings done became a standard in the job interview process.