Rejected image

Common Rejection Reasons:

Non-compliance

Intellectual Property (IP) problems

Lack of aesthetic or commercial appeal

Quality/Technical problems

Without seeing a full-sized image or knowing what the stated rejection reason was, I'll take a wild guess that white-balance was one reason. 

https://www.adobe.com/creativecloud/photography/discover/white-balance.html

Meanwhile, read these links.

• https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
• https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html
• https://helpx.adobe.com/stock/contributor/user-guide.html/stock/contributor/help/photography-illustrations.ug.html
• https://helpx.adobe.com/stock/how-to/tips-stock-image-acceptance.html

This appears to be a downsized image, because when I zoom in on it to inspect more carefully, it's very pixelated; therefore, no opinion as to its suitability for Stock can be formed. In particular, focus and noise can't be evaluated. If you want useful opinions as to why it was rejected, please upload in full size.

Adobe gave you a reason. Please tell us what it was so we can hopefully expand on it.