Which sculptor's work showed a tremendous influence of classical forms? Berlinghieri

Giotto

Giovanni Pisano

Nicola Pisano

Nicola Pisano is the answer.

i would say the answer is b. zigzag lines of the leaves. i believe this is the answer because zigzag lines go in different direction while the other options like: the vertical lines of the trees, the dotted lines on the road, and the curved lines of the park benches go in one direction.