Answer:
C). The word "pretending" creates a suspicious tone.
Step-by-step explanation:
The Tone is described as the author's approach or attitude towards a specific subject matter which offers a perspective to view the content and evokes the desired feeling from them. It is reflected through the words and language and words employed by the author.
In the given excerpt, the use of the word 'pretending' connotes a 'suspicious tone' as it conveys that the speaker is skeptical of her actions. He suspects that if she loves him truly and questions her actions(as reflected in the sentence 'the very minute I go to my bed...runs in the yard'). This helps the readers in viewing the text accordingly and feeling suspicious of the upcoming events in the narrative. Thus, option C is the correct answer.