Answer:
The third graph has the bit fit.
Explanation:
The attached worksheet explains the selection of the third graph. The top two graphs are linear, but the line has no relationship to the data points. The bottom two graphs have line slopes that match the data trend. but the bottom right graph has a line that is too far above the points. It will predict differences well, but it will miss the actual value since the y-intercept is too high. The bottom left graph has an accurate slope, and is centered around the points to minimize individual erros.