Smell is a non-verbal cue that may not be thought of as often, and it can sometimes be a barrier to communication. Which option represents the concept described as a barrier?

• A. Indicator
• B. Barrier
• C. Enhancer
• D. Clue

Answer: (B)

The key idea is understanding what a barrier does in communication. A barrier is something that blocks or makes the exchange of information harder. In the sentence, smell can interfere with how people communicate, sometimes creating discomfort or distraction. That fits a barrier, because it hinders the flow of interaction rather than signaling something, improving it, or guiding you toward understanding. An indicator would point to a condition, an enhancer would help or improve communication, and a clue would be a hint to understand something. So, barrier is the best fit for the concept described.