It means the drawing, painting, sculpture, etc.. has the same pattern or looks equal on both sides.
Answer and Explanation:
It depends on the information the artist wants to transmit. If the artist wants to show the graceful attributes and the motion of a bird, then Bird in Space would be most effective.
Either the percussion or strings, specifically cello section.
The percussion section often provides a repeating rhythm or ostinato that holds intact the rhythmic meter of a piece played by the orchestra.
The cello section will play important down beats and roots of harmonic chords that spread within the different part of the orchestra.
Madrigal, is the answer hope it helps