Which of the following is not true of art during the hellenistic period?
a.
abstract forms were often used to represent human figures.
b.
the sculptures were enormous during the hellenistic period.
c.
much of the art is characterized by outlined or drawn imagery.
d.
artists of this period had a noticeably violent vision for art.

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.