Affinity estimating, a comparative view of the estimates, is the correct answer. The story point sizes should be compared to each other. You want to confirm that all story points with an estimate of three story points are all approximately
the same size, effort, risk level, etc. The other responses are incorrect. T-shirt sizing is an actual process that that estimates story sizes; a story map is a tool used to determine project priorities; relative sizing is the agile
method’s way of assigning story points.