In harvesting sources, an excellent way both to narrow down a topic and discover a likely working thesis is to explore _______ the topic.

A. different attitudes about
B. radical ideas about
C. classic literature on
D. different perspectives on

My answer is D

Right.

To confirm your answer, let's break down the question and explore each option:

A. Exploring different attitudes about the topic can certainly help narrow down the focus and potentially lead to a working thesis. By examining various views and opinions, you can gain a deeper understanding of the topic and identify key arguments or perspectives to further research.

B. Exploring radical ideas about the topic can also be a valuable approach to narrowing down the topic and formulating a working thesis. Radical ideas often challenge conventional wisdom and can offer entirely new insights or alternative perspectives that can shape your thesis.

C. Exploring classic literature on the topic is another valid approach. Classic literature often provides foundational knowledge and historical context, which can help refine your focus and identify significant themes or theories related to the topic.

D. Lastly, exploring different perspectives on the topic is directly related to the process of narrowing down a topic and developing a working thesis. Analyzing different viewpoints can enable you to consider various angles, arguments, and evidence, ultimately shaping your stance and thesis statement.

Considering all of these options, it is clear that D, exploring different perspectives on the topic, is the most appropriate choice.