Why this image is rejected

Besides the chromatic aberration: 

and the noise level, the exposure and contrast issues and the stange blur effect, that looks like a bad Photoshop editing (or some in camera "intelligent" processing), which are all quality issues, you would also need a model releases from most of the people in your picture. 

You could crop out the people and try to fix the other issues, but if you do not have access to the raw file, I doubt that your editing can save the image.

In addition, you will also need model releases.

The sides of the temple are leaning inwards. Remove the bird on the left side. A shadow is photobombing the barrier.

There is very noticeable chromatic aberration around the people.