Which of the following internal roadblocks to effective listening is exemplified by the statement, "we've never done it that way before "?

When you say "we've never done it that way before", this may reflect your thoughts. It's either you don't want to consider another way to do things or you are willing to entertain the idea of change. This is one of the internal roadblocks to effective listening, when you think that you don't want to hear what the speaker has to say, you will lose interest in listening to him.