Final answer:
Luke is in the conventional stage of moral development, which starts in early adolescence and involves understanding societal rules and expectations.
Step-by-step explanation:
Luke, age 12, is able to use equity in making moral judgments. According to Piaget, Luke is in the conventional stage of moral development. This stage typically starts in early adolescence and is characterized by the individual's awareness of societal values and the intention to comply with rules that ensure positive social relationships and societal order.
n this stage, children begin to consider what society considers moral and immoral, indicating that their moral reasoning is based on an understanding of societal rules and expectations.According to Piaget, Luke is in the pre-conventional stage of moral development.