As a science, psychology is approximately how old?

A) 50 years
B) 125 years
C) 175 years
D) 2500 years since the field dates back to the ancient Greeks

Psychology dates back to the late 19th century, making it approximately 125 years old as a science. While there have been philosophical and religious contemplations of behavior and mental processes dating back thousands of years, the official establishment of psychology as a scientific discipline is a relatively recent occurrence.