One possible explanation for why groups might receive ...

[folubunmi]

One possible explanation for why groups might receive systematically different
   scores on tests is that
 
  a) there are real mean differences in the attributes being measured
   b) the content of the test is familiar to some groups and not to others
   c) the method in which a test is presented differs
  d) all of the above

Question 2

The fair use of test results is the concern of stakeholders including the
 
  a) test taker, test developer, test user
   b) test developer, test user, test population
   c) test taker, test user, test population
   d) test population, test developer, test taker

[KKcool]

Answer to Question 1

D

Answer to Question 2

A