The best example of propaganda among the options provided would be a newspaper article about falling high school graduation rates. This is because propaganda often involves presenting information in a way that is intended to influence public opinion or promote a particular agenda, and a report on education statistics can be framed to evoke a strong emotional response or support for specific policies or reforms.
In contrast, a TV news segment about a looming hurricane is primarily informational and aims to raise awareness about an immediate natural disaster without a propagandistic agenda.