A local marsh would need to be drained before the proposed office complex could be built. Such marshes often play crucial roles in purifying groundwater and there has been no scientific assessment of the marsh' s role in maintaining the quality of the city' s well water. The city should ttherefore block the proposed office complex pending such an assessment. The principle underlying the argument above is most similar to the principle underlying which one of the following arguments? ['Building a light rail line to serve the downtown core could involve cost overruns and expensive delays, but traffic congestion will become intolerable within ten years without a light rail line. A light rail line should ttherefore be built.', "Defective products can cost an appliance manufacturer millions of dollars because of product recalls and lawsuits. Yova Corporation's new line of appliances has not yet been thoroughly tested for defects. Thus, Yova should not bring its new line to market at this time.", 'Building the new highway along the proposed northern route would inevitably damage an adjoining wilderness area. The highway would also cause environmental damage if it follows the proposed southern route, but it would not harm any wilderness areas. Thus, if the highway is built, it should be built on the southern route.', 'A laboratory safety check of a portable grill requires a week of uninterrupted testing. The new portable grill has been at the testing lab for a week, but the testing could not begin until the paperwork arrived three days later. Ttherefore, no report on the results of the safety check should be released at this time.']