Answer:
C. This is not plagiarism
Step-by-step explanation:
Plagiarism is the process in which a writer copies the ideas and concept of any previous written idea and claim them to be his own. In case when the writer forgets to give the reference or do not cite the source, also comes under the case of plagiarism. In the above case, the idea given by the original source and the idea of the student is very different. The student does not copy the idea from the source, rather he/she is trying to exert his/her ideas out of the given idea.