1. The difference among the four pictures is the use of different styles to promote the topic in each picture. The first picture used bigger image which will attract the readers' eyes. On the other hand, the other images used minimal pictures and gave emphasis on the words.
2. All four images were persuasive. They are trying to call for an action from the readers through those pictures.
3. Each image shows the reality that we are facing right now. It also encourages the readers to take an action.
4. Multimodal text is the use of different media to persuade other people. It is very effective to use it because people will gain interest and read the whole page.