Convention in theatre refers to:

a
A sudden plot twist
b
Established practices, techniques, or norms
c
The main character's journey
d
A dramatic conflict

b

Established practices, techniques, or norms

b) Established practices, techniques, or norms

The correct answer is b) Established practices, techniques, or norms.

In theatre, the term "convention" refers to the established practices, techniques, or norms that are adopted by theatre practitioners. These conventions act as a framework that guides the creation, performance, and interpretation of theatrical productions. They can include various aspects such as staging, lighting, costuming, acting styles, and storytelling techniques. Conventions help create a shared understanding among theatre practitioners and audiences and allow for effective communication of the story and themes being portrayed on stage. They serve as a foundation for the creative expression and artistic choices made by directors, designers, actors, and other members of the theatre community.