What feature do cyclones create at Earth's surface as they spiral inward?
A, stationary fronts
B. areas of low pressure
C. occluded fronts
D. areas of high pressure

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.

answerthe available supply of sunshine, allows people to grow and sell, (especially oranges);