What does sustaining a role mean in drama?

In drama, sustaining a role means maintaining the character's persona, emotions, and motivations throughout the performance. It involves embodying the character's traits and staying in character even when not directly involved in a scene. Sustaining a role requires consistent commitment, focus, and a deep understanding of the character's journey and inner dynamics. It is a crucial aspect of creating believable and compelling performances that engage the audience and bring the characters to life.