A) The pictures in the media some of them you can trust them but anything else no. The reason why I say this is because pictures would be close up to the face and other body parts it would look to perfect with a physical change. This also includes adveristment for other companies to get publicity. Only types pictures you can trust is althelic sports.
B) The was you can tell you that image has been retouched is by looking at the image pointing out what's perfect or not. As evident you look at a basketball "LeBron James" pictures they're in action and not retouched with any type of make-up. Another is when you look on the cover of essence magazine the image is retouched with make-up and you see all the blumishes on the person's face.
C) The times you should be able to manipuate a pictures is when your comparing and contrasting. It isn't okay when you advertising false information about somebody. This concludes that nothing in the world could be perfect.
D) The way you can tell if a picture is fake is when the image is faded in or out including having make- up to cover-up the blumishes and pores of a person face, but when it comes to the person body they make skin all smooth and shiny. One Robert's Fiete ways of pointing out a fake picture is when the content of the image is altered. The reason how you can tell is when you like physical traits to see which one is using the photographer imagination. Another factor is illumination characteristics of a scene. You can tell when you have 3d image that is being illuminated or faded/shadow to make it appealing to the viewer.