Nitrogen is present in the environment in chemical forms like A) Organic nitrogen - containing compounds
B) Ammonium ions
C) Nitrate
D) All of the above

airlines i think? or a cruise boat? does this work out for u? ?

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).