How Did Physiologists and Physicists,like Gustav Fechner,contribute to the Development

Multiple Choice

How did physiologists and physicists,like Gustav Fechner,contribute to the development of psychology as a science?

A) They studied the relationship between the physical world and mental representation of that world.
B) They acknowledged that the mind and soul were separate from the body
C) They mapped the brain and identified the locations of specific functions within the brain.
D) They extended Darwin's theory of evolution to behaviour and cognitive abilities.