For the illustrator to use the photographs in a digital collage as a paid commission for a major newspaper, he would need to choose photographs that allow for commercial use and modifications. The two correct answers for Creative Commons licenses that permit this are:
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CC BY - This license allows for commercial use and modifications as long as proper attribution is given to the original creator.
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CC0 - This designation (Creative Commons Zero) effectively places the work in the public domain, allowing anyone to use the work for any purpose, including commercial use and modifications, without the need for attribution.
The other licenses (CC BY-NC-ND, CC BY-NC-SA, CC BY-ND) either restrict commercial use or modifications, thus would not be suitable for the illustrator's purposes.