The anthropologist that conducted a now-classic study of cultural variation in the 1930s was
a.
horace miner.
c.
margaret mead.
b.
napoleon chagnon.
d.
george murdock.

The correct answer is b. Margaret Mead

Explanation:

Mead in his work, refuted the idea of primitive societies, where the inhabitants were considered as children, or as if they were genetically determined to develop less advanced psychological states. She argued that human development depends on the social environment. From there, Mead observed that gender roles were very different among different societies, which led to the conclusion that these roles depend much more on culture than on biology.

a. formula: f=ma or f/m=a

10,000n/1,267kg≈7.9m/

b. formula: a= and s=d/t

speed= 394.6/15

s=26.3m/s

a=

a=1.75m/

c. 7.9-1.75=difference of 6.15m/

d. the force that most likely caused this difference is friction forces

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.