Asolid yellow line on your side of the road marks a a. pedestrian crossing area b. passing zone c. no-passing zone d. trucks-only lane

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

what are the options?

c- companies fail to take environmental protection into account. i think