Final answer:
Babe is 9 years older than Nancy. Nancy is 19 years old, so Babe is 28 years old. The ratio of Babe's age to Nancy's age is 19:9, which corresponds to choice D.
Step-by-step explanation:
To solve the problem, we need to calculate Babe's age and then find the ratio of Babe's age to Nancy's age. Since Nancy is 19 years old and Babe is 9 years older than Nancy, Babe's age can be found by adding 9 years to Nancy's age:
Babe's age = Nancy's age + 9 years
Babe's age = 19 years + 9 years
Babe's age = 28 years
Now, we have both ages and can form a ratio. Babe's age to Nancy's age:
Ratio = Babe's age : Nancy's age
Ratio = 28 : 19
Therefore, the correct answer is D) 19:9, which is the ratio of Babe's age to Nancy's age.