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I was going to remove the CSD tag since the IP either completely misunderstands WP:NFC (tagging this file is the only edit made by the IP) or the tagging was just a frivolous nomination, but I'll leave for an administrator to review.
FWIW, the subject of the photo Prasanta Chandra Mahalanobis died in 1972 which means a non-free photo can be used per item 10 of WP:NFCI as long as WP:FREER isn't an issue. In addition, the non-free use rationale appears fine (although the source link needed to be tweaked) and the copyright license seems OK, while the way the file is being used (i.e. primary identification purposes in a stand-alone article about Mahalanobis) seems also acceptable. This file would seem to meet WP:NFCCP as long as there are no free equivalent photos of Mahalanobis that could be found and used instead. That, however, would be a WP:F7 issue and not a WP:F9 issue that the IP claims is the problem.
Non-free content by definition is copyright content and relevant Wikipedia policy allows copyrighted content to be used as long as it complies with WP:NFCC. The only possible issue other than FREER that I can see here is whether the source provided is actually the original source of the photo (i.e. WP:NFCC#10a) because the photo actually looks like it's been colorized, which might mean the "source" website got it from somewhere else, colorized it, and then uploaded to use on the Mahalanobis's profile page. That might make the photo a WP:Derivative work, but not necessarily a WP:COPYVIO per WP:NFC#Meeting the previous publication criterion. That might be something worth discussing at WP:FFD, but I don't think it makes the file eligible for speedy deletion as copyvio. --Marchjuly (talk) 09:56, 19 September 2020 (UTC)[reply]
The same photo can be seen used as the book cover of biography written about Mahahanobis here, and also this 2011 Indian Government brochure for National Statistics Day, so perhaps the source given for the image isn't the original one. Even so, the image is used lots of places online so it seems to meet NFCC#4. -- Marchjuly (talk) 10:08, 19 September 2020 (UTC)[reply]