Answer:
B. Sentence 4
Explanation:
The paragraph's thesis is centered around the idea that Sophocles uses both Antigone and Creon to illustrate the dangers of refusing to let go of one's beliefs. Sentence 4, "Ultimately, readers are left to wonder about the true value of refusing to change," encapsulates this theme and restates the thesis by emphasizing the lingering question about the worth of resisting change. It echoes the central idea the author is trying to convey regarding the consequences of holding onto one's beliefs, aligning with the broader theme discussed throughout the paragraph.