I would say A. Or B hope it helps
Answer: change in tone of writing
Explanation: an author may change the tone of their writing. here is an example:
It was so nice to celebrate my birthday with my friends today. If only I could’ve said goodbye to my mom before she passed.
In this example, the tone of the words change between happy/nostalgic to sad/regretful/melancholy etc.
<span>An action, person, place, word, or object. Which are used to represent something more than its literal meaning.</span>