I would go with:
A theme is best written as statement because a theme is main thing of a story, the author could also use a statement in a story to make it seem more alive or more real.
I Hope my answer worked for you :)
I think it’s a. the use of bolding, font size, and headlines
These are all the answers that could fill the blank: sell, market, and promote. Hope it helps and remember to mark as the brainliest answer!