*ANSWER PLS N TY* How does water scarcity in certain places result in hunger for the people? a.) Water is needed for proper sanitation. b.) When wetlands dry up, more biodiversity occurs. c.) Polluted water causes disease. d.) Water is needed to grow successful crops.

D water is needed to grow successful crops

the last one: artificial selection/genetic engineering

plant breeding is modifying the genetic composition of the plant - but this isn't cloning (which is specifically introducing a gene into a genome). but you are artificially selecting for the phenotype that you want.

the second one is literally genetic engineering - the gene would have been cloned first and then inserted or genetically engineered into the new plant cell (the cotton).