Which person coordinates light, sound, and scene changes during the performance, as well as the entrances and exits of the performers? which person coordinates light, sound, and scene changes during the performance, as well as the entrances and exits of the performers?

Stage Manager.

Explanation:

The stage manager coordinates light, sound, and scene changes during the performance, as well as the entrances and exits of the performers. The stage manager is in charge of organizing a theatrical performance making it possible to run smoothly. The stage manager works together with the director during rehearsals and he or she takes notes of the key aspects of the performance.

the answer might be either a or c. can't be too sure , because i searched the web, but no valid answers came through.