Answer:
A. the sound designer.
Step-by-step explanation:
The sound designer is responsible for creating and controlling the sound effects and musical score in a theatrical production. They design the soundscape of the play, including doorbells, telephone rings, door slams, thunder claps, and music, to enhance the storytelling and create an immersive experience for the audience. The sound designer works closely with the director and other members of the creative team to create a cohesive and effective sound design that supports the overall vision of the production.