Some themes for this could be a cliche like "All life is precious" and if you watch "The Walking Dead" on AMC, you know Morgan the actor refuses to kill humans because he believes they can change to good people. Another theme could be "All things deserve life"
Health and life insurance
I think it's C but I'm not really sure
Answer:
-They become best friends
-Murder
-They fall in love
-You see the 2 people point of view and see what they think of each other and why they hate each other