The last one(...) i guess since the () don't make sense neither does the hyphen nor the /
First one would be your answer
Answer:
to a dear brother,
this letter, which will talk about the 3 reasons I like my friend, goes to you because you wanted to know why.
First of all, my friend is a truly supportive person who has never judged me for what I do or find interest in, this is something that makes me elated and truly thankful. Secondly I am sure I am able to rely on my friend no matter the problem, or how big it is; And lastly, my friend has made me smile on the worst occasions and has always been there to brighten my worst days.
I hope you understand why i cherish and like my friend now.
Love
Your sibling.
