A circular structure that is strong and energy efficient is a:

A. superdome

B. geodesic dome

C. metronome

D. soccer ball)

Geodesic Dome

Explanation:

A geodesic dome is a hemispherical thin-shell structure (lattice-shell) based on a geodesic polyhedron. The triangular elements of the dome are structurally rigid and distribute the structural stress throughout the structure, making geodesic domes able to withstand very heavy loads for their size.