Paleontologists recently excavated two corresponding sets of dinosaur tracks, one left by a large grazing dinosaur and the other by a smaller predatory dinosaur. The two sets of tracks make abrupt turns repeatedly in tandem, suggesting that the predator was following the grazing dinosaur and had matched its stride. Modern predatory mammals, such as lions, usually match the stride of prey they are chasing immediately before they strike those prey. This suggests that the predatory dinosaur was chasing the grazing dinosaur and attacked immediately afterwards. Which one of the following most accurately describes the role played in the argument by the statement that the predatory dinosaur was following the grazing dinosaur and had matched its stride? ["It is presented to counteract a possible objection to the argument's overall conclusion.", "It provides the basis for an analogy used in support of the argument's overall conclusion.", 'It is the overall conclusion of the argument.', "It helps establish the scientific importance of the argument's overall conclusion, but is not offered as evidence for that conclusion."]