D.
A is incorrect as writing was on walls.
B is incorrect as it does not resemble the Chinese language.
C is incorrect as it’s writing and does not produce sounds.
Hope this helps!
The equation is 2916= 12x • 15, since area is length times width.
in this case, x would be 16.2
first, you divide 15 on both sides, then, you isolate x by dividing by 12 on both sides. the answer is 16.2
hope this helps
