The answer to this question is entasis.
Entasis is a design principle in architecture where in a convex curve was applied to a surface which also serves a strength to the construction and it also gives an optical illusion to it. Egyptian pyramids use this design principle.
<span>B the golden ratio was a guiding principle in an often chaotic world </span>
Roman architecture emphasized<em>grandeur</em>
<em>Hope I helped</em>
the answer is b) A color's brightness or dullness, as well as shadows and contrasts created with color