The tomatoes are not in focus and the lights are blown out. The avcados are not well focused either. In addition, the white balance is not correct in both images. The third image consists largely of a black area with no drawing. Here you can find information on rejection for technical reasons and other helpful information: https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html
The shadows in the avocado image are also bad. It isn't good for stock. The lighting is bad in all the images, I'm afraid.