*The creation of a mosaic was a complicated procedure that called for careful timing and teamwork... Walls were painted with resin or tar before being covered with the first of three layers of plaster A
sketch of the projected work was thien made on the plaster to serve as a guide for the various artisans.
The outermost layer of plaster, in which the pieces, or tesserae, of the mosaic would be set, was spread
on only enough area to contain a day's work. Some of the tesserae_small, carefully cut fragments of
colored glass, marble, and semiprecious stones were pressed into the wet plaster so that they
projected at a slight angle. The stones thereby better reflected light and imbued the finished mosaic
with a shimmering life of its own."
-Empires Besieged: Time Frame AD. 200-600
Tesserae of semiprecious stones were set into the plaster at an angle in order to
fit into a particular space.
C. reflect light better.
b. create an imperfection.
d. keep them from being stolen.
a.
Please select the best answer from the choices provided