I say Child because he is the one that is frightened.
Repetition, is the device that supports the author's purpose
That's because you have to have a lighting source so as to avoid pixelated dark photos, and as there's no natural light indoors, or it goes away quickly as it depends on windows, you have to use artificial lighting.
Connect to because it is relatable to them
D. An idea or principle the writer accepts as true and makes no effort to prove.