Answer:
(C) Discrimination
Step-by-step explanation:
Discrimination is a horrible act of negatively differentiating a person or a group by being what they are. The most common cases of discrimination occur due to intolerance regarding gender, race, religion and social class.
In the present case, if an Australian citizen refuses to recognize a relative because of skin tone, he or she is clearly committing an act of racial discrimination. Cases of discrimination should be harshly repelled.