The Bethlehem Chapel<span> (Betlémská kaple) is a medieval religious building in the Old Town of </span>Prague<span>, </span>Czech Republic<span>, notable for its connection with the origins of the Bohemian Reformation, especially with the Czech reformer Jan Hus.</span>
If the movie is perhaps a documentary, then it is telling you factual information of actual events (includes pictures or pictures of actual documents or events); this makes it a primary source.
If the movie is based off of real events, has factual information, but also has added information to create a well-rounded plot, this makes it a secondary source.
No because it was a dangerous expedition
D is the answer for this question as it is the most likely.