I believe the answer is: <span>the average years of schooling each person receives
From knowing the average years of schooling that people have before graduation, we could make a rough assumption on the academic ability that average students in a certain area have, and the socio-economic factors that might cause it.</span>
<span>Interview, Examine, document, process</span>
The answer to your first question, Q# is C
2. A
Well......
1. Obviously if your born into a family.
2. If you marry into a family.
3. If your adopted.
Hope this helps!