The thesis statement of the paragraph is primarily reflected in sentences 3 and 4.
Sentence 3 introduces the intent to demonstrate the potential of traditional African values of ubuntu for influencing South African law and jurisprudence, while sentence 4 elaborates on the importance of ubuntu in shaping these legal institutions and jurisprudence. Together, they encapsulate the core argument of the paragraph.
Thus, the correct answer is 3 and 4.