Sure, let me help you on this one!
1.05859 is more on the 1.1 side rather than 1.0 side. We can see it by looking at 3rd, 4th, and 5th decimal place. Rounding this number to a 2nd decimal place would grant us 1.06, meaning that when rounding to the 1st decimal place, we should go with 1.1.
Answer: 1.05859 rounded to 1st decimal place is 1.1