If you're talking about YouTube or platforms like that, you have to monetize your videos in the settings. However, if your video contains copyrighted content, you will most likely be banned or given a strike for copyright infringement. You can monetize videos that have absolutely no copyrighted music, pictures or videos
HTML is to give structure to the content of a web page. You can specify what links are part of the site's navigation, what sentences are headers and what blocks of text are paragraphs pertaining to those headers. Tables can present a data and establish the relationships of the data sets.
I think the answer is B. The text should be brief.