I don't see the point. What matters is not whether something is called "art," what matters is whether it affects the viewer in a way that art is expected to affect the viewer. The difference between "great art" and anything else, whether you call it "minor art" or "crap," is that great art affects many viewers in the way art is expected to affect its viewers, and everything else does not. But that doesn't mean that it isn't going to affect somebody, somewhere.
If we can see beauty in natural objects that were not created by anybody, then it stands to reason that occasionally we're going to see beauty in unnatural objects that were created by accident, or by artists who aren't very "good."
My case in point is picture #4, the black circle. Why is that called "art"? Because it was painted by a person who is recognized as an artist? It's a fucking black circle, for the goddess' sake! It's just plain stooopid.
On the other hand I somehow guessed that #3 was a fake, but I still liked it and spent some time admiring it. I also appreciated #6, #10 and #11, which I assumed were "art."
Paul Klee is an overhyped fraud. His stuff looks like the work of kindergartners. Albers? It's three fucking squares! I don't mean to malign anyone who finds meaning in these works. But please don't malign me for appreciating the ones I like.
I got 67% in Test #1. I didn't bother taking Test #2, since I'm not well educated about art and don't know what telltales to look for in order to distinguish a famous artist from someone else. (I did not get this job for my knowledge of paintings; I'm a musician and my wife has a degree in literature.

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And I thought #3 was pointless because I have seen paintings for sale that were no more attractive or inspiring than the ones painted by apes. Nonetheless I got 100% on that one! I guess I've seen enough ape art that I recognize their "school."
BTW, humans are apes. Great Apes, specifically, along with gorillas, chimpanzees and orangutans. The gibbons are Lesser Apes. So all of these works were
painted by apes.