Choose the sentence that is correctly punctuated.
a.
this article argues that there are some interesting similarities between lincoln and kennedy's assassinations.
b.
this article argues that there are some interesting similarities between lincolns and kennedys assassinations.
c.
this article argues that there are some interesting similarities between lincoln's and kennedy's assassinations.
d.
this article argues that there are some interesting similarities between lincolns' and kennedys' assassinations.

C.  This article argues that there are some interesting similarities between Lincoln's and Kennedy's assassinations.

Explanation:

When talking of something in the possessive noun, it is mandatory to indicate the apostrophe s ('s) in the primary noun. So, for the above sentence to be grammatically correct, we will have to add 's to both Lincoln and Kennedy as they comprise of separate persons.

This article argues that there are some interesting similarities between Lincoln's and Kennedy's assassinations.

The addition of the 's in the respective names of the two men indicate their respective assassinations.  

huck's relationship with food is a prominent theme throughout the novel, and during his time on jackson's island and working his way down river, huck revels in and enjoys his ad hoc dining. in the first chapter, we observe huck is ironically trapped in a "civilized" world, when he would prefer to live freely in nature.

the answer should be a)directions.