Final answer:
On Yom Kippur, Jews emphasize reflection, repentance, and fasting to seek forgiveness for sins and improve their relationship with God and others.
Step-by-step explanation:
On Yom Kippur, which is the holiest day in Judaism, Jews emphasize reflection, repentance, and fasting. It is a day of atonement and seeking forgiveness for sins committed during the previous year. Jews spend the day in prayer and self-examination, seeking to improve their relationship with God and their fellow human beings.