Answer: Perceptual barriers
Explanation: As the name suggests perceptual barriers refers to the barriers that are created out from the perceptions. In such barriers the receiver did not even try to understand the message with all his efforts and behaves carelessly.
In the given case, the employees of Teresa did not understand the message and state that they do. Therefore, the employees might be acting carelessly or have some other perception about their boss.
They could have a perception that asking too much questions might affect their image in the eyes of boss.
Hence from the above we can conclude that the correct option is B.