A. It helps reveal the characters’ thoughts and feelings.
Explanation:
Body language is part of the communication code of human relations as much as written or verbal language. It is a way of providing the reader with the ability to interpret the mood and feelings of the characters through their features, gestures and expressions. It is easy to identify the body language in theatrical contexts, as the characters are usually very expressive so that this communication is guaranteed to be executed. However, in everyday life people also communicate this way, but in usually subtle ways.
