My brother photo bomed my pic XD

What “knits” the above painting together? a. the figural arrangement b. the facial expressions c. the mood, created by sunlight through the trees d. the dancing figures to the left of the painting

Silverpoint is a. a technique using the blackish residue of impure carbon obtained by removing water from animal and vegetation substances. b. a technique involving the use of a metal point, and a thin silver wire, popular in the 14th and 15th centuries. c. a printmaking technique born from crayon manner that imitates the appearance of chalk lines. d. a technique used since the 16th century involving a stick filled with either colored or black graphite, a heated mixture of carbon and clay

Name the primary colors. why are these colors considered the only “primary colors”?