Final answer:
In her research, Helen Yoshifa likely explored primary sources, secondary sources, and peer-reviewed articles. These sources would allow her to construct a well-substantiated and credible historical argument, solidifying the validity of her conclusions.
Step-by-step explanation:
In her research, Helen Yoshifa explored various sources of evidence to support her conclusions. Among the sources that could be utilized in historical research, Yoshifa might have included primary sources for direct evidence from the time period being studied, as well as secondary sources that provide analysis and interpretation of the primary evidence. Additionally, she could have consulted peer-reviewed articles for scholarly perspectives and empirical data that lend credibility to her research. Utilizing these types of evidence helps reinforce the validity of her work. For instance, in historical inquiry, a researcher like Yoshifa could answer guiding questions by drawing conclusions from a range of sources, thus ensuring a well-rounded understanding of her subject.
Specifically, Yoshifa could have quoted from primary sources to illustrate specific points, as done in the analysis provided by Marshall. Searching for corroborating information from other reputable sources such as academic journals or databases would further substantiate her findings. Furthermore, peer-reviewed articles like those from the Agricultural and Resource Economics Review could help in finding updated data to support her research. By critically analyzing sources for bias and synthesizing information, Yoshifa could also refine her own opinions and relate evidence to her thesis effectively.
In sum, combining direct quotations, contextual information, and recent scholarly research enables a researcher to construct a compelling and credible historical argument. Yoshifa's utilization of such a multidimensional approach to evidence would empower her to justify her claims effectively within her research project.