The correct answer is E. Physical noise.
Personal noise is any type of interference or distraction that can hinder effective communication between people. Physical noise refers to external, environmental factors that can interfere with communication, such as loud music, traffic noise, or other sounds that make it difficult to hear what someone is saying.
Messages (option A) are the content being communicated, semantic noise (option B) refers to confusion caused by different interpretations of the same word, feedback (option C) is the response given to the original message, and prejudice (option D) is an attitude or belief that can lead to unfair treatment of certain groups or individuals.