Answer:
The correct answer is b. El director dirige la actuación en el musical.
Explanation:
Musical director refers to the position of directing a group of musicians, whether instrumentalists, singer, choir or combination of people who will fulfill some function when the musical work is performed.
In modern times, musical directors are required to take care of activities related to concerts and presentations by great artists, as tours and different stages make the task more complex than acting in closed venues, whose acoustics are perfected and their Facilities are stable, reliable and safe.
In the case of recordings, additional requirements are presented and decisions must be made about ambient noise that may or may not be included in the recording. It is customary to call the conductor, Maestro or Musical Director, but the latter term has a somewhat broader concept than that of the conductor, even though he must also perform multiple tasks prior to the presentation of the musical group itself.