Answer:
A smooth, possibly curved line that you judge to come closest to all the points i.e, best fit line.
Explanation:
Line of best fit is a line through a plot of data points that best expresses the relationship between those points. The statement 'A smooth, possibly curved line that you judge to come closest to all the points' defines the best fit line.
The other options are incorrect because we do not represent the plot of data points by horizontal or vertical lines representing their average/ midpoint values.
