The correct answer is D.
A positive correlation is a form of statistical association which indicates that two variables tend to move jointly in the same direction.
Therefore, if there is a positive correlation between the number of years of education and the amount of a pension contribution, it means that the more years of education the higher the pension contribution earned by an individual. Therefore the pharmacist who holds a doctorate degree is the person with the highest number of years of education, and the one who should recive the largest pension contribution.