Answer:
0.1.
Explanation:
When rounding to 1 significant figure, you look at the first non-zero digit. In this case, the first non-zero digit is 8. The digit to its right is 3, which is less than 5, so the 8 remains unchanged. All other digits to the right of the first significant figure become zeros.
Therefore, 0.08351 rounded to 1 significant figure is 0.1 .