The correct answer is language barrier.
If people are ignored because of their inability to speak standard English, they have just encountered a language barrier. It is a kind of noise in communication. When there is a language barrier, there could be a difficulty in communication. I hope this answer helped you.
It can ruin the victim's self esteem, it can hurt other people's feelings, it affects people around you, it can cause the victim to be violent, it can lead to poor academic performance.
The correct answer is false.
There are so many categories into which you could place communication, but supportive and aggressive are not the most popular ones. I believe that the most basic division would be into oral and written communication - the one where you have to speak to another person, and the one where you can write them.