My friend, Alex, plays tennis.
My = possessive pronoun
friend = subject
Alex = an appositive (which is a noun that renames another noun right beside it) -- though not an adjective, it functions like one to explain which friend
plays = verb
tennis = direct object
hope this helps :)
It's C.
It needs a colon because the following things after make a list
the writer is dying ?
past their peak/summer, seem to be comparing their state to what they see in nature.
seem to like nature ... pre computer keyboard days ?