Which of the following are the communication barriers? (A) Inverted u (B) Semantic (C) Psychological (D) Organisational Choose the correct answer from the options given below:

Option 1 -> (A), (B) and (D) only - Incorrect because "Inverted U" is not a communication barrier; it refers to the relationship between arousal and performance. Option 2 -> (A), (B) and (C) only - Incorrect because "Inverted U" is not a communication barrier, and it excludes Organisational barriers which are valid. Option 3 -> (A), (B), (C) and (D) - Incorrect because "Inverted U" is not classified as a communication barrier. Option 4 -> (B), (C) and (D) only - Includes Semantic barriers (language/meaning issues), Psychological barriers (emotions, perceptions, attitudes), and Organisational barriers (structure, hierarchy, policies), all of which are recognized communication barriers. Hence, Option 4: (B), (C) and (D) only -> Semantic, Psychological, and Organisational are well-established categories of communication barriers, while "Inverted U" refers to the Yerkes-Dodson law about arousal-performance relationship, not communication barriers -> correct