Answer:
<em>Doing this can help the audience understand your topic more because they can see your opinion, rather somebody else´s. It is better said in your words, because maybe some of your audience has heard the same words from the same topic. Using your own perspective makes things more interesting. </em>
Explanation:<em>Hope this helps.</em>
Speech balloons, also known as speech bubbles, dialogue balloons or word balloons, are a graphic convention used most commonly in comic books, comics and cartoons to allow words to be understood as representing the speech or thoughts of a given character in the story or events of the graphic novel or Comic.
According to the information presented before I would conclude that the main purpose of a speech bubble in a graphic novel is:
D) It illustrates internal thoughts.
It is a compound complex sentence