Answer:
This passage serves to inform people about Yellowstone National Park and it's features.
A primary source is where the information comes directly from the original copy or someone who experienced it first hand, and where as a secondary source is someone or something that was not there when the event took place- hope this helps!!
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!