Final answer:
Jin's father likely believes that Jum would make a good emperor due to his claim to the throne, desirable qualities and skills, and personal reasons.
Step-by-step explanation:
Jin's father likely believes that Jum would make a good emperor because of several reasons.
First, Jum is the eldest son and therefore has a claim to the throne based on succession. This is an important consideration in traditional monarchies.
Second, Jum may have displayed qualities and skills that are desirable in an emperor such as intelligence, leadership, or military prowess.
Lastly, Jum's father may have personal reasons for believing in his son's abilities and character. This could include past achievements, personal observations, or even biased favoritism.