Answer:
D
Explanation Okay so i dont know if i am right but here is my explanation so first process of elimination we will start with A so unity is being united aka coming together and independence is doing something independently aka by yourself so it would not make sense if being together cause you to go off alone. Next C voluntary service means volunteering to go do something such as help a shelter and impartiality means equal treatment these do not go together. Next we have B so neutrality means not helping either side and we already discussed impartiality so these 2 dont make sense together. So D must be be the answer because universality means to be involved in a group for particular things in the world and we discussed voluntary service, these 2 terms match the most because if you were in a group for the world it would cause you to go help a shelter or do service.
Hope this helps!
~brianna/edgumacation