Which term means a volume of a certain rock type of a specific age? a
geologic unit
b
contact
C
fault line
O
d
geologic map

correct answer is a. and d.

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).