Final answer:
The most relevant source for the research question regarding the benefits of continued space exploration for humankind is a scholarly article by a NASA scientist, as it would provide current, expert insights into the advantages and potential implications for humanity.
Step-by-step explanation:
When evaluating which source is most relevant to answering the research question "What are the benefits of continued space exploration for humankind?", the best choice would be c. a scholarly article written by a NASA scientist arguing for increased funding for the space program.
This source is likely to provide a well-researched and well-argued case for the benefits of space exploration, reflecting recent data and insights. A NASA scientist's viewpoints would be based on in-depth knowledge of the subject and would likely include arguments about technological advancement, potential for scientific discovery, and the broader implications for humanity.
Although historical accounts of the Apollo Moon Landing and textbooks on jet propulsion systems provide valuable background information, they do not focus directly on the current and future benefits of space exploration. Moreover, a graphic novel, while creative, is a work of fiction and not a reliable source for answering this sort of research question.