From the full question attached, it is clear that from the graph, the storage life of the bunch was 2 days less than predicted on the temperature by the least square regression line.
What is the Least Square Regression line?
The Least Square Regression line, also known as best life of fit, is the line that minimizes the variance or makes the vertical distance (when plotted on the graph) from the data points to the regression line as small as possible.
It should be noted that Storage Life is the dependent variable (y) while Storage Temperature is the independent variable (x). The answer, therefore, is D.
Learn more about the Least Square Regression line, here:
https://brainly.com/question/26059078
