What multipkys to -90 but adds to 1

Option 'D' is correct.

Step-by-step explanation:

Since we have given that there is a positive correlation between "Number of years of education and the amount of vacation time."

So, We need to find the careers that would have the most vacation time.

Among the Associate's degree, Bachelor's degree, Master's degree and Doctorate's degree.

The number of years of education is the highest in the doctorate degree as it contains 10 to 15 years.

According to positive correlation, Pharmacist have the most vacation time.

Hence, Option 'D' is correct.