Final answer:
An actor must be completely familiar with a character's Given Circumstances and must be totally aware of all the means that the character uses to reach them.
Step-by-step explanation:
An actor must be completely familiar with a character's Given Circumstances and must be totally aware of all the means that the character uses to reach them. Given Circumstances refer to the details of the character's world, including the time period, relationships, and history. To portray a character effectively, an actor must research and analyze these details to develop a deep understanding of how the character thinks and lives within the context of the world.