Squires arrived after the spectators, and the knights arrived last of all.
The sentence means that the knights were last to come to the event, so we need the superlative form of the adverb. Later is comparative, and most late doesn't exist as a form, which leaves as with last as the only option.
I would say the best answer is B. A subtopic within the main topic
Hope this helps :-)
A third person limited only knows their own thoughts while third person omniscient knows all characters’ thoughts.
third person limited- “she seemed calm”
third person omniscient- “she is calm”
An example of foreshadowing in the possibility of evil is that to provide clues about the conflict which will take a place.