Complexity Character. Hopefully this helps!
Answer:
A bias is a favor of a side or opinion others may not agree with, so this statement is a common bias, that parents say because they are in favor of kids learning to help others.
Raymond likely didn't do the part of speech preparation that has to do with demographic analysis.
He gave a very specialized speech about a specific topic on West Coast football to a general audience who might not be interested in this type of a subject. He should have studied his audience more and made the speech more suitable for them.