Final answer:
Monogamy is the sex script deeply rooted in Christian regulations of sexuality as it aligns with the traditional Christian teachings emphasizing a marital bond between one man and one woman. Polygamy, casual sex, and open relationships typically do not adhere to these religious standards. Functionalism as a theoretical perspective supports this regulation of sexual behavior for family stability.
Step-by-step explanation:
The sex script rooted in Christian regulations of sexuality is Monogamy. Christian doctrine typically emphasizes the bond of marriage between one man and one woman, often correlating with monogamous relationships. In contrast, Polygamy, which refers to unions involving more than two adults, Casual Sex, and Open Relationships generally do not align with traditional Christian teachings on sexuality. Monogamy is highly adapted to societies where smaller family units are necessary due to mobility or economic factors. This concept of marital cohesion and family stability resonates with the theoretical perspective known as Functionalism, which underscores the importance of regulating sexual behavior.