Eliminating the spread of germs, viruses, bacterias, feces, for the book's hands to the food
The point of view reflects the perspective of the story. The person is in terms to the narrator. Thus, the answer is the last one.
It iuses imagery to express a desire for the melding of the natural world (mammals, pure water, clear sky) with the artificial (cybernetic, computers, programming) in "harmony".
