The answer that will fill in the blank is that it should also be understood. It is because for communication to build, or for it to be connected, it is always important or necessary that there is an understanding between the two parties or more that are communicating, in order for them to understand what they are talking about or what they are trying to say to each other. It is important to apply understanding in communication because it is always the key in absorbing the things that are being said to you by the person you're talking or the person you're communicating with.
