Answer:
<em>Pharmacists are medication experts and play a critical role in helping people get the best results from their medications. Pharmacists prepare and dispense prescriptions, ensure medicines and doses are correct, prevent harmful drug interactions, and counsel patients on the safe and appropriate use of their medications.</em>
B) Enduring
If this is the war from 2001-2014 B should be correct
Hope this is right, as I just did quick research for the answer.
This is called monogamy as opposite to polygamy (multiple spouses at the same time).