Choose the sentence that does not describe a structural adaptation. a. an elephant has a long trunk that it uses to reach leaves high in a tree. b. a dog walks to a stream and drinks when it gets thirsty. c. a hummingbird has a long, thin beak to sip nectar from flowers. d. a rosebush has thorns to protect it from animals that might eat it.

not sure but try c two haploid cells

explanation:

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).