From space, the richat structure in the sahara looks most like a
a.
straight line
b.
triangle
c.
bull’s-eye
d.
square

C.  bull’s-eye

Explanation:

The Richat Structure comprises of Early Paleozoic shakes, around 600 million years of age. Around the middle, rocks impervious to enduring and disintegration (purple and blue-green part) make 100 m high edges and harmless rocks (yellow and dark colored part) structure valleys. These highlights substitute and are concentric.  

The Richat Structure was recently thought to have been shaped by shooting star sway or volcanic movement, however field studies have exhibited that nor is right. The ebb and flow believing is that these highlights were formed by uplift and subsequent erosion from wind and water.

isaac newton first proposed that earth was not perfectly round. instead, he suggested it was an oblate spheroid—a sphere that is squashed at its poles and swollen at the equator.

the idea of the earth being a flat disc is also inconsistent with the fact that a given lunar eclipse is only visible from half of the earth at a time. the only shape that casts a round shadow no matter which direction it is pointed is a sphere, and the ancient greeks deduced that this must mean the earth is spherical.