Barriers which are concerned with problems and obstructions in the process of encoding and decoding of message into words or impressions are known as:

Semantic barriers

The correct answer is Option (3) → Semantic barriers

Semantic barriers arise from problems in encoding or decoding a message — that is, when the sender and receiver interpret words, symbols, or expressions differently. These barriers occur due to language differences, unclear meanings, or use of technical jargon, leading to miscommunication.