at room temperature table salt is a solid and mercury is a liquid. What conclusion can you draw about the melting points of these substances? i bet you guys don´t know this.

the endomembrane system i think

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).