Answer:
The letter C is the righr answer.
Step-by-step explanation:
The author does not criticize or accuse anything in this sentence, for this reason the letters A and B are wrong. The sentence also does not present a dramatic tone because it does not present any event or situation with emotional intensity, which can be represented, for that reason the letter D is also wrong.
For this reason, we can conclude that the letter C is correct. The author uses a cautious tone, to create a more intimate environment and provoke a reflection between the reader.