I believe the answer is: B.proper government purpose
For example, there is a regulation to reduce the amount of Asian-american candidate from entering university because their score typically higher compared to other students.
This can be seen as an act of discrimination.
But the decision is seen as 'proper' because it intended to give more room for students from other racial minorities to pursue higher education.
a flexible form of armor composed of many small iron rings was called mail
Chain Mail.
The correct answer is bottom-up processing
Top-down and bottom-up are the two strategies of information processing and knowledge ordering, used in a variety of fields, including software, humanistic and scientific theories (see systemics), and management and organization. In practice, they can be seen as a style of thinking, teaching or leadership.
In bottom-up processing, there is no preconceived idea about the stimulus received.