D. Yours.
generally when writing a letter you put:
Yours truly,
(your name here)
which means that yours would be capitalized
This describes Mr. Harvey, the serial killer, who has killed and gotten away with it so often that he almost believes his own innocence.
A journey that presents many challenges. 'Unpaved' showing it's not built, you gotta build it (build your future) and 'rocks' 'holes' and 'mud' obviously signifies trouble showing there are many challenges to face in the way.
Hope you found this helpful. :)