Quiz: Good license, bad license

A license that says the work can be reused if credit goes to the original author (CC-BY)
Incorrect! Wikipedia’s images credit the original author if the author requires it.
A license that says the work must be shared under the same license (CC-BY-SA)
Incorrect! Wikipedia's text will always be “ShareAlike”, and images with the ShareAlike requirement are also allowed.
A license that says the work cannot be sold (CC-BY-NC)
Correct! Wikipedia’s content may be sold by others, or incorporated into works which are sold. You can’t use images that require non-commercial use.
A license that says there are no restrictions on use of the work (CC-ZERO)
Incorrect! If there is clear agreement from the original author that the work is shared with no restrictions, you can use the image.

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