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The following question consists of an incomplete sentence. The missing part of the sentence has been split into four parts. All four parts are jumbled up and labelled P, Q, R, S. Arrange the jumbled parts of the sentence and find out which of the four combinations from the given options will correctly complete the sentence. The ongoing development of 'CRISPR-edited' staple crops offers a promising, albeit controversial, solution to the looming global food crisis _______________________________________________ provided that the regulatory frameworks can keep pace with the speed of biotechnological innovation. P. by allowing scientists to make precise deletions in the plant's genome to enhance drought resistance Q. without introducing foreign DNA from other species, as was common in traditional GMO techniques R. through the activation of latent genetic pathways that enable the plant to thrive in nutrient-poor soils S. effectively shortening the breeding cycle from decades to a few years while maintaining a higher degree of nutritional density