An egalitarian society:
a. contains roughly as many valued positions as there are persons capable of filling them.
b. recognizes status on the basis of gender and age.
c. is a society in which people generally have equal access to critical, life-sustaining resources
d. all of these choices are correct

D. All of these choices are correct

Explanation:

An egalitarian society is the goal of those philosophers and social thinkers that seek equality for all peoples in all times.

They recognize that everyone has fundamental rights and are equal regardless of gender, age, sex, religion, ethnic origins.

The political, economic and social rights give mechanisms for seeking the same quality of life and guarantees for peaceful coexistence.

Advocates of egalitarian society will recognize equal positions for both men and women at work, as well as giving men and women the same rights and responsibilities.

They seek to eliminate any gender gaps.

For short, social egalitarianism is the doctrine that seeks to bring to equal terms all members of society and deliberately creates the conditions for ensuring education, life long jobs and ultimately general fulfillment of all needs for all members.

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.