Final answer:
Michael Himes highlights the importance of community and love for one another as the core insight at the heart of the Catholic tradition, underscored by the practice of the sacraments and communal worship which create a strong sense of community.
Step-by-step explanation:
According to Michael Himes, the core insight at the heart of the Catholic tradition is A) The importance of community and love for one another. This insight draws from the practice of the sacraments and the early Christian custom of gathering for worship and creating a strong communal identity. The sacraments, such as Baptism, Communion, and Confession, have historically been central to the Christian faith, emphasizing community involvement that leads to a path of spiritual salvation. These rituals fostered a reliance on the Church and affirmed the interconnectedness and support within the Christian community, reinforcing the notion of loving and aiding one another. Furthermore, the importance of communal identity was evident in early Christian practices like addressing each other as 'brother' and 'sister' and participating in communal feasting.