Read the line from act ii of the importance of being earnest.

algernon. well, one must be serious about something, if one wants to have any amusement in life.

the literary device used in this line is a(n)
understatement.
pun.
paradox.
epigram.

The literary device used in this line is a paradox. It means that you are combining opposite things, such as being serious and amused in this example. 

The answer on E2020 is

C. paradox

(I just took the Test Review, and WorldlyGlass49 is correct.)

Dear family
(Date)
I will not return home I’m stuck in the middle of the ocean with no food or water I have no chance of surviving theres a storm and I’m surrounded by sharks I’ll miss all of u dearly sadly this is the end of my time but one day we’ll see each other once again this isn’t how I thought things were going to end I love you all but my time has come and I must say good bye

Love yours truly (insert name)

P.s u could add other things but I only had a certain amount of time to write it and sorry that it’s not the best I could rewrite it later if u would like