The Development of Psychophysical Methods and Reaction Time Experiments at the End

The development of psychophysical methods and reaction time experiments at the end of the 19^th century was important to emerging field of psychology because these methods

A) paved the way for psychology to become a quantifiable,laboratory-based science.
B) were instrumental in the development of behaviorism in the 20^th century.
C) linked psychology with spiritualism in the public's mind.
D) allowed researchers to gain understanding about mental telepathy and clairvoyance.