Natural selection is based on all of the following EXCEPT a. variation must exist within a population
b. INDIVIDUALS evolve to adapt to new surroundings
c. certain traits give an advantage for survival over other traits
d. selective pressures prevent everyone in a population from reproducing equally
e. traits that benefit survival are inherited

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).