The correct answer is C. A thesis statement should be debatable.
Explanation:
A thesis statement is a sentence or statement that guides the process of writing an essay or arguing a position or claim about some situation or issue. Because of this an appropriate and effective (well-crafted) thesis statement should express the topic and the position of the author on this topic, which means thesis statements should not only report facts or opinions, also, it should not be too narrow or too broad. Besides this, considering the thesis statement is used for argument and proving one's position as valid and logic, it is important this thesis statement is debatable, which means the author will need to provide evidence to show it is valid. Thus, when creating a well-crafted thesis statement it is important to consider that the "thesis statement should be debatable" as without this feature the thesis would not support the process of arguing it aims at.
