Which of the following is not a barrier to communication?

Option 1: Semantic barriers -> Barriers related to language, words, symbols, and their meanings that cause misunderstanding in communication -> these ARE communication barriers.

Option 2: Physiological Barriers -> While physical/biological conditions can affect communication, this term is not typically classified as a standard category of communication barriers in organizational communication theory.

Option 3: Psychological barriers -> Barriers arising from mental and emotional state, perceptions, attitudes, and prejudices -> these ARE communication barriers.

Option 4: Organisational barriers -> Barriers due to organizational structure, hierarchy, rules, and policies that impede information flow -> these ARE communication barriers.

Hence, Option 2: Physiological Barriers -> The standard categories of communication barriers typically include Semantic, Psychological, Organizational, and Physical barriers. "Physiological barriers" is not conventionally listed as a distinct category in the classical classification of communication barriers -> correct