A.I. Explanation:

Option 1: "It can avoid getting in to troubles."

Explanation: While the text mentions that not considering body language can lead to trouble, it does not state that body language itself helps avoid trouble. This option misinterprets the text's focus on the positive aspects of body language.

Option 2: "Helps in understanding the working of a person."

Explanation: This option is too vague and does not directly relate to the text. The text emphasizes understanding body language in the context of workplace interactions rather than understanding a person's work processes.

Option 3: "It helps in mutual understanding."

Explanation: Although mutual understanding is a component of effective communication, the text does not explicitly state that body language facilitates mutual understanding. This option lacks specificity regarding the workplace context mentioned in the text.

Option 4: "It helps a person in workplace and jobs."

Explanation: The text clearly states that positive body language is important not only in job interviews but also in the workplace. This aligns directly with the main idea of the text, which emphasizes the significance of body language in professional settings.