Which sentence from the passage supports the inference that some scientists have challenged

Question

Newton's universal theory of gravity?
1. "Nearly three centuries would pass before the world would host a comparable scientific genius." (Paragraph 1)
2. "Newton's view of gravity might be called the great equalizer." (Paragraph 3)
3. "Regardless of physical composition, everything exerts as well as feels the force of gravity."
(Paragraph 3)
4. "This success gave Newton's theory unequivocal support until the early part of the twentieth century." (Paragraph 4)

Answer 1

The sentence that supports the inference that some scientists have challenged Newton's universal theory of gravity is: "This success gave Newton's theory unequivocal support until the early part of the twentieth century." (Paragraph 4)