In Figure 7-2, which picture shows ice wedging: A, B, or C?

no pic if you meant to add one

Explanation:

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?

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).