Plagiarism is: select one: a. the submission of material authored by another person but represented as the student's own work. b. the submission of material subjected to editorial revision by another person. c. improper acknowledgement of sources in papers, essays, or presentations. d. all of the above

option D

Explanation:

the correct answer is option D

Plagiarism is stealing someone's work and  putting  it as it's own work. Plagiarism is considered as unethical because copying someone's idea is against the journalistic ethics.

Options given in the question are the comes under the condition of Plagiarism.

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.