By the beginning of the $20^{\text{th}}$ century, several hypotheses were being proposed, suggesting a paradigm shift in our understanding of the universe. However, the clinching evidence was provided by experimental measurements of the position of a star which was directly behind our sun.
Which of the following inference(s) may be drawn from the above passage?
- Our understanding of the universe changes based on the positions of stars
- Paradigm shifts usually occur at the beginning of centuries
- Stars are important objects in the universe
- Experimental evidence was important in confirming this paradigm shift
- i, ii and iv
- iii only
- i and iv
- iv only