Why would anyone need to ask that question? Perhaps someone who is blind and was just told about the photograph, or maybe a person with very low intelligence. Or perhaps someone with reasonable intelligence but lacking perception.
I know many of you might not understand this, but I'll try to explain. You think you perceive reality, but much of what you believe you perceive is actually constructed by your brain to fill in blank spots. That’s why it’s sometimes necessary to study a situation carefully.
Anyway, that’s not the point. Anyone looking at this can tell it’s not Trump, just look at the picture closely. I hope you can see that. Of course, I don’t mean you’re unintelligent, if you can’t see it, you might just lack perception.