Does the position of a car driver' s seat have a significant impact on driving safety? It probably does. Driving position affects both comfort and the ability to see the road clearly. A driver who is uncomfortable eventually becomes fatigued, which makes it difficult to concentrate on the road. Likewise, the better the visibility from the driver' s seat, the more aware the driver can be of road conditions and other vehicles. Which one of the following most accurately describes the role played in the argument by the claim that driving position affects both comfort and the ability to see the road clearly? ['It is a claim that the argument shows to be inconsistent with available evidence.', 'It is a premise offered in support of the conclusion drawn in the argument.', 'It is the conclusion drawn in the argument.', 'It is used to provide a causal explanation for an observed phenomenon.']