Choose only one of the four source materials listed in the question for the answer which is the source of the extract (answer) provided below. A traditional authority that observes a system of customary law may function subject to any applicable legislation and customs, which includes amendment to, or repeal of, that legislation or those customs. a. Promotion of Equality and Prevention of Unfair Discrimination Act 4 of 2000 b. Constitution of the Republic of South Africa, 1996 c. Law of Evidence Amendment Act 45 of 1988 d. Recognition of Customary Marriages Act 120 of 1998