If we think about movies like Joker for example, we can see the setting is very dark and dreary from the beginning. In the first 10 minutes, he cries and gets beat up and the colors are very dull visually to help provide that gloom aesthetic. Later on, the rising action of him killing the two boys didn't change the theme, it just made the story move along. There are a few "antagonists" and he reacts to them poorly. However, the way he resolves the conflict is by just letting himself fall into the chaos. At the end, it shows the theme of how much damage can happen if mental illness is not treated the way it's supposed to even though through Arthur's (Joker's) point of view he thinks the moral is "it doesn't get better for people like me".
This is because if there are two opposing forces(antagonist,protagonist) and the protagonist resolves the problem between themselves and the "bad guy"(or girl:), then the outcome from this is the response to what the story is trying to teach the readers. This results in the theme of the story.(I'm not very good at explaining, but I hope this helps!)
Both writers use hyperbole to convey negative opinions about how dangerous the roads are for cyclists because of the actions of other road users. In the first paragraph of Source A, the writer zooms in on what he views as the cause of the problems on the roads: people in cars.
