Final Answer:
In a bilateral descent group, the term "Hu" typically refers to one's spouse. In kinship systems, a spouse is not considered a blood relative, making "Hu" the correct choice. Therefore, correct answer is C. Hu.
Step-by-step explanation:
In bilateral descent systems, individuals trace their kinship through both their maternal and paternal lines. Each person is connected to relatives on both sides of their family tree. Let's analyze the options:
A. Br (Brother): This refers to a male sibling and is a relative.
B. Fa (Father): This is a direct blood relative in the paternal line.
C. Hu (Spouse): This term denotes a spouse, and while a significant connection, a spouse is not a blood relative.
D. Si (Sister): This refers to a female sibling and is a relative.
E. FaFa (Paternal Grandfather): This denotes a grandfather on the father's side, making it a blood relative.
In a bilateral descent group, all options except "C. Hu" are blood relatives. The term "Hu" represents a relationship formed through marriage, and while culturally and socially significant, it does not involve shared genetic ancestry. Therefore, "Hu" is the correct answer as the non-relative in the given options.
In summary, the key lies in understanding the nature of the relationship each term represents within the bilateral descent group. "Hu" stands out as the only term not indicating a blood relation, aligning with the principles of bilateral descent systems.
The correct answer is C. Hu.