Which of these writing assignments suggests an informal style?

A. a composition explaining the causes of the Civil War

B. a newsletter outlining the goals for the school year

C. a blog response to a musical performance

D. a scientific theory predicting results of an experiment

C. a blog response to a musical performance

A blog is similar to an online journal. It is written in an informal style and usually contains personal opinion statements. A composition explaining the causes of the Civil War should be written in a formal academic style as well as a scientific theory. A newsletter outlining the goals for the school year should also not be written in an informal tone. If the goals are written informally, then they may not be taken seriously.

I believe it's either b or c