Explicit- when a person takes a distinct side and demonstrates their personal opinion on the issue, using and telling facts and statements to support their stand to the audience

Implicit- when a visual, audio, or text inspires an opinion of the audience. The author or artist doesn’t lay out his perspective but creates a piece where the audience makes a judgment

The picture from example # 5 is an implicit argument. The picture is showing rather than telling the way the photographer sees the idea of war and service. The audience and people have to view the image and come up with an explanation by themselves, it is all person interpretation.
Most commonly, I think people argue the opposite way. They immediately take a stand and start to ramble off all the reasons why they are right. They begin to deny all other idea and start an explicit argument. A person creates a statement or thesis to stand by and that is the core of their paper or speech or how ever they are engaged in an argument.