4. Which choice best explains why a 1 kilogram sample of carbon and a 3 kilogram sample of carbon have similar properties?
A. They have the same mass
B. They have the same shape
C. They have the same volume
D. They have the same type of atoms

idk what happened..you tell

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).