D. Newspapers. This used to be the main place for people to know what was happening across the country (or world) since here they saw advertisements, as well as news, opinions, or even comics that could be related to such. Also, these are updated weekly, so it used to be how to keep up to date.
Today, most people use social media, because it is quicker, free, and see the same news from various perspectives, giving you variety and unbiased information.