The correct answer should be C. To provide relevant background information
Flashbacks are usually used to show us some part of the characters' lives that is important for understanding the present time.
To inform his readers "Audience" about his experience when he didn't rely on his phone. He could also be trying to persuade his readers to "Ditch" their phones........ The author's audience is likely people who use their phones daily and very often. Probably people who might like to change things up a bit in their phone usage.
Internal conflict<span> is </span>conflict<span> within the person and </span>external<span> is conflit </span>between <span>the person and someone or something else</span>
Meaning:the great or extreme scale, seriousness, or extent of something perceived as bad or morally wrong.
Other meaning: a grave crime or sin.