Question

The _____ elaborate(s) on your main point and provide(s) reasons for your opinion.

A. Thesis
B. Conclusion

Answer 1

A. Thesis

Thesis' are at the beginning of an essay that plays on your main points and briefly explains your reasoning.

Answer 2

The answer is; thesis. This is because the conclusion is used when finishing off a paragraph and usually contains your strongest point.

Whereas, a thesis is an elaboration of the points.

Hope this helped! :)