Answer:
There are many ways to do this.
"To start off, I feel that..."
"In my personal opinion I think that..."
"In other words, I think that..."
"To be sincere/truthful, I feel that..."
Unfortunately, you haven't shared any options so that someone could pick the right one, but I think that my answer should be acceptable. While reading this excerpt, I felt like there is somessing missing in author's life, he mises his childhood. According to this, I can say that the <span>word which describes the tone in this excerpt in the best way is - NOSTALGIA.
Hope that heps!</span>
A B And c Should Work Hope I Helped