The correct answer is C. Begin reading from sources to gain perspective on the topic.
Step-by-step explanation:
A thesis statement refers to the main point that the author tries to prove in an argumentative paper such as an essay. This statement is created before writing the paper and just after selecting the topic and being informed about it, although the thesis statement can be modified during the process.
This implies, before drafting the thesis statement the research should read from multiple sources to know about the topic as this would the writer to have a realistic perspective on the topic and therefore create a suitable thesis statement that can be supported and proved with the information available as thesis statements need to be realistic and able to prove.