Answer:
b. all musicians hitting the right notes.
A technical skill in an orchestra performance would be the ability of all the musicians to hit the right notes. This involves precise intonation, rhythm, and dynamics, which are fundamental elements of musical performance. The orchestra being properly seated can be considered a technical aspect as well, as it ensures that the musicians are positioned in the optimal way to produce the best possible sound. However, hitting the right notes is an essential technical skill that requires years of practice and dedication. The audience enjoying the piece or the performance selling all of its tickets are not technical skills but rather measures of the success of the performance from the audience's perspective.
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