Final answer:
Option B. For the perpetuation of shared beliefs in religious marriages and God-coupled triangles, A shared religious doctrine must exist. This doctrine serves as the communal and spiritual foundation for a marriage within a religious context, and it encompasses beliefs and practices held in common among the members of the religious community.
Step-by-step explanation:
To ensure the perpetuation of shared beliefs in religious marriages and to structure what are referred to as God-coupled triangles, b) A shared religious doctrine must exist. This religious doctrine encompasses a set of beliefs and practices that are held in common among the members of the religious community. These shared doctrines are integral for providing the foundation upon which the spiritual and communal aspects of a religious marriage are built.
Religious marriage often implies a commitment underpinned by shared religious beliefs and practices. The perpetuation of these shared beliefs in marriage situations involves more than just the union of two individuals; it envelops a triadic relationship that includes the divine as conceptualized within a particular religious tradition.
Whether in the context of Judaism, Christianity, and Islam which all promote belief in a single deity, or other religions that may have different concepts of the divine, what is essential is the presence of mutually acknowledged supernatural beliefs and moral guidelines that inform the married life of the couple.