18. the dada movement was started by artists who were disillusioned with the a. materialism of the increasingly sterile scientific world. b. oppression of indigenous populations by colonial powers. c. limited potential of classical-only techniques in art. d. brutality of world war i.

answer; /// i believe its(romans);

i believe the answer is: a.  abstract forms were often used to represent human figures.

representing human figures in abstract forms is often used in the geometric period, not hellenistic  period.   during the hellenistic  period,   aesthetic value derived from creating arts which mimic the actual shape of a certain object or individuals.

hope this ! < 3