Well, timbre is related with the envelope of the acoustic wave. The form of the wave will be received by your ear and then translated to electrical impulses to your brain. I think, that we are adapted to consider "continuous and smooth waveforms" as "nice", so timbre will be one of the first characteristics that your brain will analyze.
Answer: I think is C - sand + cobalt oxide + lime + heat
Explanation:
The paintings,and the lascaux caves
