We have to round 566, such that , it has three significant figures.
→ Option 1
600=It has only one Significant figure.Zeroes which lie on right side of digit ,if there is no decimal after zeroes are not significant.
→ Option 2
570=Two Significant figure.
→ Option 3
566=Three Significant figure.
→ Option 4
500=One Significant figure.
⇒Option 3 ,which is equal to 566, is most appropriate ,among given Options, that is when this number is rounded , it has three significant figures.
