Which of the following best describes the growth of new plants from nonreproductive plant parts, such as stems, roots, and leaves?
OA Baleenophoric reproduction
OB Vegetative reproduction
OC Viniferatic reproduction
OD Tissue culturing

b. the carbon cycle ensures living things have a source of hydrogen

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).