Because the SnapShot computer application boasts such high numbers of users, I believe our school should allow our teachers to teach lessons using this widely loved photo app.

Conclusion paragraph:
Each afternoon outside of the school walls, my friends and I use SnapShot to create meaningful art, so using the app in the classroom would allow us to combine our SnapShot skills with learning. As stated earlier, students will be more enthusiastic about math or science lessons when using a popular computer application to complete projects or homework. Because our school recently added a computer lab, all students would have easy access to the application. Yes, SnapShot should be used in our school.
Which statement best explains the effectiveness of the conclusion paragraph?

A.
The conclusion is effective because it reinforces the author's credibility and accurately restates the essay's thesis statement.

B.
Although the conclusion includes several points that support the main idea, it is ineffective because it fails to use an interesting and powerful closing sentence.

C.
The conclusion is effective because it does not create needless and boring repetition of the essay's main ideas.

D.
Although the conclusion restates the main idea of the essay, it is ineffective because it does not provide a summary of supporting points.