Technology, science, and inventions enhanced All of the above in the twentieth century.
B, they analyse any faults in the product to try and make a better final design which will then be built
An orchestra is defined as a large instrumental ensemble typical of classical music. An orchestra features bass, brass, strings, woodwinds, and percussions. In the list given above, the section that is not one of the four groups in the orchestral palette is the voices. The answer would be "voices".