Answer:
C. In some cases (most commonly where images are involved), it's not enough to acknowledge someone else's work; you must also pay the copyright owner if you wish to use the work.
Step-by-step explanation:
"Remember, you’re not outright buying an image from a stock agency, but are paying for certain uses of it. Read the specific terms and conditions (to which you have agreed). For example, you may be able to post the image on your blog but require additional permission to use it on the cover of your e-book."
Reference: COPYRIGHTLAWS.COM. “6 Best Practices for Legally Using Google Images.” Copyrightlaws.com: Copyright Courses and Education in Plain English, 8 May 2019