Answer:
A. Plagiarism
Explanation:
Gift authorship, Harassing a co-worker and conflict of interest is somehow not really related to the Research misconduct.
Plagiarism on the other hand, is an unethical practice of using the words of some other person representing them as your own without any acknowledgement to the original source. Hence, According to the U.S. Federal Research Misconduct Policy, Plagiarism is considered as the research misconduct.
