I believe the answer is: Feminism
Feminism arise alongside with industrial revolution as more jobs appear that require less physical demand compared to the past.
They tend to fight for social equality between genders and<em> Challenge the perception </em>that most people had in the past which dictate women couldn't be as good and as reliable as Men in society.
Answer: Pets who learn that the sound of an electric can opener signals the arrival of their food illustrate: C.) classical conditioning.
Explanation: These pets have been experiencing Pavlovian Conditioning, this is the conditioning response of associating the (neutral stimulus) sound of the can opener with receiving food (biological stimulus).
Kit Carson served as John C Fremonts guide