The graph that has a linear fit that is best for the data that Alex collected is the graph attached.
A linear fit that would be best for Alex's data is one that tries to get an equal number of shoe sizes on both sides of the line.
The shoe sizes should also be a roughly equal distance to the line and the line should be drawn in the middle of the data. The line that does this best is shown attached.
Find out more on linear fits at https://brainly.com/question/839548.