The painter who designed the sets for stravinsky's pulcinella, and who went through a phase that showed the influence of ancient greek art, was

Pablo Picasso

Explanation:

Pablo Picasso was a one of the greatest artists of the 20th century and he was famous for his paintings.

He was considered radical in his work, as he continues to garner reverence for his technical mastery, visionary creativity, and profound empathy. Together, these qualities have distinguished the Spaniard.

For nearly 80 of his 91 years, Picasso devoted himself to an artistic production that he superstitiously believed would keep him alive, contributing significantly to the development of modern art in the 20th century.

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.

answer; the edward snowden leaks of nsa classified material;