Which technique involves painting on a freshly plastered wall and was popular during the Greek, Roman, Medieval, and Renaissance periods? A. Tempera B. Watercolor C. Fresco.

C

Explanation:

Fresco - a painting done rapidly in watercolor on wet plaster on a wall or ceiling, so that the colors penetrate the plaster and become fixed as it dries.

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