Answer:
Yes
Step-by-step explanation:
The term copyrights simply refer to exclusive rights vested upon someone who is the original creator of a work, usually the copyrights owner.
Remember, we are told that "Professor Etheridge decides to make 20 copies of the [National Geographic Magazine] article". Well, according to the US copyrights office, the term "copies" refers to "material objects, other than phonorecords,....and from which the work can be perceived, reproduced, or otherwise communicated, either directly or with the aid of a machine or device."
We are told, "Professor Etheridge decides," note, without permission from National Geographic Magazine "to make 20 copies of the article." Which means she had violated US copyright law.