Which of the following is an example of accidental plagiarism?
A. Summarizing information without including a source credit
B. Submitting a paper that was written by a friend
C. Forgetting to include an in-text citation for information
D. Copying information from a source and identifying it as your own
Forgetting to include an in-text citation is not intentional and probably means that the writer had already included a reference but forgotten about the in-text citation.
Therefore, the Correct Answer is C.