Answer:
This is an example of inference.
Step-by-step explanation:
We infer when we use reasoning to reach a certain conclusion having premises as a starting point. In other words, we use information to predict a consequence or result. In the situation approached in the question, Bill is inferring that Ted doesn't care about what he is saying. The premise he moves from is Ted's interruption. Bill probably followed the logical path below:
I was talking - Ted interrupted me - Ted never heard what I had to say because he interrupted me - Ted does not care about what I have to say - if Ted cared, he wouldn't have interrupted me.