Final answer:
Haydn was a Composer-in-residence at the Esterhazy Palace, overseeing music creation and performance. The correct option is B. Composer-in-residence
Step-by-step explanation:
The position of Joseph Haydn at the Esterhazy Palace was that of a Composer-in-residence. In this capacity, Haydn was responsible for composing music, conducting the orchestra, and overseeing the musical life of the palace.
His work with the Esterhazy family extended over several decades, allowing him to create a vast amount of music and contribute significantly to the development of classical music, especially during the Classical period.
Haydn's employment under the patronage of the Esterhazy family exemplifies the common practice in the 18th century where composers would serve noble families or royal courts.
This stable position provided Haydn with the opportunity to experiment and refine his compositions, including symphonies, string quartets, and operas, which played an important role in shaping the classical musical form. The correct option is B. Composer-in-residence