According to this theorem, The moment of inertia of a planar body about an axis perpendicular to its plane is equal to the sum of its moments of inertia about two perpendicular axes lying in the plane of the body.
\(I _{ z }= I _{ x }+ I _{ y }\)
Hence, sphere is correct answer.
$(g=$ ગુરુત્વીય પ્રવેગ $\theta=$ આકૃતિમાં દર્શાવ્યા મુજબ કોણ)