Final answer:
Paul Bloom's concept of rational compassion is most aligned with virtue ethics, as it emphasizes the cultivation of compassionate character traits, differing from the outcome-oriented utilitarianism and the rule-bound deontology.
Step-by-step explanation:
Paul Bloom's concept of rational compassion aligns closely with virtue ethics, which emphasizes character and the development of virtues. Unlike utilitarianism, which focuses on outcomes, or deontology, which is concerned with duty and rules, virtue ethics is interested in how a person develops morally exemplary traits. Such traits include compassion, which Bloom advocates for as a balanced approach to feel and think about the suffering of others, leading to benevolent actions through the cultivation of character.