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.
The
technique of blocking some parts of a photograph to emphasize (or draw
attention to) another part of the same photograph is called <span>Framing </span>
Answer: A.found in Gothic Cathedrals in Western Europe
Explanation: