Final answer:
The physical choices actors use to display emotions are collectively referred to as body language, encompassing gestures, facial expressions, and posture, which are all part of an actor's training and practice to effectively express emotions.
Step-by-step explanation:
The physical choices an actor uses to display emotions, which are typically referred to as body language, include a range of nonverbal means such as facial expressions, gestures, and posture. While an actor's facial expressions can convey specific emotional reactions, it is the combination of all aspects of body language that work together to represent the full spectrum of an emotional state.
Similarly, gestures are movements, often of the hands or arms, that express ideas or feelings. Moreover, the use of body language is a powerful form of communication that can be observed in various situations from political debates to personal interactions, where individuals express and recognize emotions unconsciously.
An actor's training often incorporates disciplines such as yoga, dance, and martial arts, which are fundamental in developing the physical awareness and stamina necessary for effectively using body language. In this way, actors ensure that their physical presence is as articulate as their verbal language. Rehearsing involves conditioning the body, voice, and mind to express emotions fluidly and without hesitation.