The shape of earth is

The correct answer is: B. oblate spheroid.

An oblate spheroid is a sphere that is slightly flattened at the poles and bulges at the equator. This is because the Earth is spinning, and the centrifugal force of this spin causes the Earth to bulge out at the equator.

A sphere is a perfectly round object. A circle is a two-dimensional shape that is the same distance from the center at all points. A spheroid is a three-dimensional shape that is similar to a sphere, but is slightly flattened at the poles.