Final answer:
The ideal or characteristic of shamanism that influenced the development of theatre in China is the incorporation of ritualistic elements into performances.
Step-by-step explanation:
The characteristic of shamanism that reflects an important influence on the development of theatre in China is c) Ritualistic elements. Shamanism, with its roots in religious and healing rituals, involves practices that create a connection between the physical and the spiritual worlds. These rituals typically include dance, music, and storytelling, which are also foundational elements of the theatrical performance. Traditional Chinese theatre often incorporates these ritualistic elements into its performances, echoing the practices of ancient shamanistic ceremonies. Over time, as theatre developed, it began to take on distinct forms like Chinese Opera, integrating ceremonial aspects of shamanism into the artistry of performance.