One Difference Between the Results of Australian Students and Students

Multiple Choice

One difference between the results of Australian students and students in many other countries on large-scale comparative tests such as PISA (Program for International Student Assessment) is:

A) Australian students perform at a higher level in Mathematics.
B) Australian students perform at a higher level in Science.
C) the relationship between social background and achievement is stronger.
D) the relationship between gender and achievement is stronger.