the evolution of art is though to be most closely associated with the evolution of which other human trait?

Question

a. the use of tools
b. the use of language
c. the us of fire
d. standing in an upright posture
e. having forward facing eyes

Answer 1

b. language.

Although I could see an argument that a). the use of tools could also be correct. Hard to paint with no brush, and hard to do computer graphics with no computer.

Answer 2

Art criticism. :)
Actually, (b) use of language