Natural selection occurs very quickly- usually in a matter of a few years.
True OR False

True.

Explanation:

Natural selection is how animals and others are picked off, the weakest dying first. It can take years at the most.

true

Explanation: step by step

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).