Concept:Any single-digit repeating decimal like 0.̅4 can be written as the repeating digit divided by 9.Explanation:Write each recurring decimal as a fraction.0.̅4 means 0.444... which is equal to 4/9.0.̅6 means 0.666... which is equal to 6/9.Add the two fractions: 4/9+6/9=10/9.Convert 10/9 to a mixed fraction: 10/9=1+1/9=191​.This matches option A.Answer:A. 191​