Answer:
D. Amount of income earned and years of education
Explanation:
A positive correlation is a linear movement where when one variable increases, another variable increases as well.
Shoe size and weight have correlation.
Day of the week and temperature also have no correlation.
Cost to heat a house and putside temperature would be a negative correlation because on variable is decreasing while the other is increasing.
The longer your education, the more your income will make because of your knowledge on that particular subject.
Therefore, the best answer is D.
hope this helps!