Bradley is watching an interesting TV program with a group of friends. During the commercial break, he is unable to concentrate on a commercial for a soda drink because all his friends are discussing the events of the show. In this scenario, Bradley is encountering:

Disturbances known as noise

Explanation:

From the given scenario of the question,

Bradley is not able to concentrate on the advertisement, as his friends are discussing about the TV program.

As the other people are continuously discussing about something else, so Bradley is not able to concentrate on the commercial break.

His friends acts as a disturbance or noise, which act as a barrier.

Hence, from the given scenario of the question,

The correct answer is Disturbances known as noise.