Answer
Hi,
An example of a statement that illustrates a debatable argumentative thesis could be;
“College curriculum should be changed with respect to students’ preferences” OR
“At least 30 per cent of federal spending should be on reducing pollution”
Explanation
In a thesis, readers should be able to reasonably have differing opinions on the matter. A non-debatable thesis is one that is general accepted or agreed as a fact thus leaving no room for trying to persuade readers. For example, Pollution has contributed to climate change.
Good Luck!