Genetically modified crops have been sold commercially for almost twenty years now, and there is no evidence linking their consumption with any sort of disease. At this point, it is unreasonable to believe they are dangerous; with such attention on them, if they created short- or long-term health problems, we would know about it by now.
Which of the following, if true, most weakens the argument stated above?
【选项】
Although we have studied the potential health impact of eating GMOs on humans, we have not studied potential disruptions to the ecosystem which would threaten human safety indirectly.
选项是否正确？