Why is chemical digestion important to mechanical digestion

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.