Question

The major theories of color vision were first proposed:

A. in the 1800's, based on behavioral evidence only.
B. in the 1930's, based on some psychophysical data and lesioning studies.
C. in the 1960's after Hubel and Wiesel's pioneering research.
D. in the 1990's when technologically advanced brain imaging studies could be conducted.

Answer 1

the answer is A. in the 1800s, based on behavioral evidence only.

Step-by-step explanation:

I know it by experience. :)