True, even till this day the world remains in sin
The answer to the blank is none of the above as the answer to the blank is Upward Social Mobility.
Social mobility refers to the individuals or groups movement in social position and upward social mobility is the ability to move up in social class and the opposite is the downward mobility. The movement or the social mobility is based on education, occupation, wealth and other social variable.
The answer is D, they worked to expose the corrupt businesses like Boss Tweed.
Answer:
Extinction; the rat will stop responding to the song
Explanation:
Extinction will take place as the rat will stop responding to the song since no treats are being provided anymore.
