advantages of using immobilised enzymes in industry other than remaining active over a greater range of pH.

i think the answer would be a dominant trait.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added

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).