Answer:
The best answer to the question: What does the allusion Parthian tell the reader about uncle Billy, would be, C: It emphasizes his belligerent personality.
Explanation:
"The Outcasts of Poker Flat" is one of several short stories written by American author Francis Bret Harte in 1917. The story is about the events that take place in the town of Poker Flat, in California, that has been met with a downturn in all aspects including moral. Wishin to change that downturn and improve the circumstances, the people of the two decide to exile a group of people they consider are the reason for this bad streak of luck. Among the group we find John Oakhurst, The Duchess, Mother Shipton and Uncle Billy all of whom have been chosen due to their "immoral" lifestyles. On the 7th paragraph of the story we learn that Uncle Billy as a pretty vulgar man, who does not hesitate to curse out at every turn and be mean and aggressive, and the way the author refers to that characteristic is by saying that as the group left the town, Uncle Billy regalled the guards that were escorting them out with "a Parthian volley of expleitives" (The Outcasts of Poker Flat).
