Respuesta :
Answer: C. Utmost regret.
Explanation: The tone of a text or sentence is the author's or speaker's attitude towards the audience, the subject or even the characters of the text. There are many different kinds of tones, like: positive, negative, objective, sad, angry, etc. From the given options, the phrase that best conveys the tone of the excerpt is the corresponding to option C: utmost regret, which is how the speaker used to look upon his condition.