Researchers have introduced specific genes into crops through genetic engineering technology, which enables them to encode synthetic Bt toxin protein, which can kill invading pests. Transgenic Bt cotton is widely planted in some places, which effectively controls the harm of cotton bollworm, but at the same time However, another pest, the blind stink bug, is flooding. In this regard, researchers believe that the spread of blind stink bugs is not caused by genetically modified Bt cotton, but because the local climate is more suitable for the growth of blind stink bugs. Which of the following, if true, would most weaken a researcher's point of view? ['Blind stink bugs usually move into cotton fields from other hosts in early to mid-June, and this period is the control period for the second-generation cotton bollworm.', 'After transgenic Bt cotton is planted in a large area, because the cotton itself is resistant to bollworm, the number and amount of pesticide sprays are significantly reduced, which indirectly results in the blind stinkbug population gaining living space.', 'As blind stink bugs continue to migrate from cotton fields to other hosts, blind stink bugs have also threatened the growth of local grapes, apple trees, peach trees, and pear trees, becoming new pests of many crops.', 'The climatic conditions of the area during cotton growth are also conducive to the growth of pests such as cotton aphids, ground tigers and red spiders.']