B.the tendency for individuals to marry whom grew up in physical close proximity
Dyslexia is the answer. Hope this helped
Answer: Discriminant validity
Explanation:
Discriminant Validity
Discriminant validity means a researcher needs to display or show that those variables that are not correlated are indeed not correlated in real life or practically .
For example the test above is measuring intelligence rather than reading ability so the researcher can use discriminant validity to actual show that reading ability is not related to intelligence and that the test is solely measuring intelligence.
He should show the evidence that there is really a low correlation between these two measures.
The most basic definition of fertile is "being able to produce offspring". In humans this means being able to have children, and in other species, such as plants, it means being able to reproduce: by producing seeds for example.
It's about the problem of the divide between races, often invisible but sometimes physical.
