Which of the following best describes a person who often indulges in without care for others' feelings?

A person who often indulges in their own desires without concern for others' feelings can be aptly described as arrogant. This term embodies a sense of superiority or self-importance, where the individual prioritizes their own needs and pleasures above those of others. Such behavior reflects a lack of empathy and an unwillingness to consider the impact of one's actions on the feelings and well-being of other people.

In contrast, the other terms provide different meanings. Someone who is sacrificial demonstrates selflessness by putting others' needs before their own. Selfless individuals are characterized by a commitment to the welfare of others, aligning more closely with altruism rather than self-indulgence. Ambivalent describes a state of having mixed feelings or contradictory ideas about something, which does not specifically address the idea of indulgence or disregard for others' feelings. Thus, 'arrogant' is the most fitting descriptor for a person who regularly indulges without care for others.