Identify the correct statement(s): 1. An individual is born into a family of procreation. 2. A extreme demographic scarcity of women may lead to polyandry in certain societies. 3. Exogamy is universally and strictly practiced among all tribal groups without exception.

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Matrilocal residence norms involve a married couple residing with the wife's family, a structural variation identifying societies such as the Khasi in Meghalaya. Reason R: Household authority in patriarchal systems is characterized by male dominance in decision-making, a social framework prominently observed in North Indian states like Haryana and Punjab. In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following statements correctly describe the contemporary transformations and modern challenges affecting the family unit? 1. Macro-economic events like German reunification influence family stability and gender roles. 2. Reproductive technologies such as IVF and surrogacy are redefining the concept of parenthood. 3. Modern trends reflect a move towards egalitarian authority and flexible, shared gender roles. 4. Kinship systems maintain their lineage strength and importance in urban contexts as in traditional societies. Choose the most appropriate answer from the options given below: