Which of the following is NOT a form of DNA technology?

Reforestation techniques do not fall under the category of DNA technology since they primarily involve methods for restoring and nurturing forests. These techniques focus on ecological practices such as planting trees, managing existing forests, and maintaining ecosystems to support biodiversity and combat climate change.

In contrast, stem cell research, transgenic organisms, and cloning are directly related to the manipulation and study of genetic material. Stem cell research often involves understanding how cells can become specialized and can lead to advances in genetics and regenerative medicine. Transgenic organisms are created through the direct modification of an organism's DNA to express specific traits, which exemplifies the practical application of genetic engineering. Cloning involves the generation of a genetically identical copy of an organism and relies on intricate knowledge of genetic material and techniques to replicate DNA. Thus, reforestation techniques do not employ direct manipulation of DNA, establishing it as a distinctive practice separate from DNA technology.