Benny Is Writing a Research Paper on a Specific Method

Multiple Choice

Benny is writing a research paper on a specific method of farming.He really admires the methods used by one farmer,who is also a published author,and wants to use his explanations in his research paper.How can Benny ensure he doesn't plagiarize?

A) Use the farmer's explanation verbatim in his paper.
B) Rephrase the farmer's explanation in his paper.
C) Change a few words in the farmer's explanation in his paper.
D) Add a formal citation and use the farmer's explanation in his paper.