A. looted = 4. pillaged
Both loot and pillage mean the same, and that is to rob a place, usually using violence, and usually during a war
B. irritated = 3. piqued
Both irritated and piqued mean annoyed, provoked, upset, although the verb pique could also mean excited and interested, depending on the context.
C. unselfish = 1. altruistic
Altruistic is a word of Latin origin used to mean the same thing as unselfish - someone who is generous and selfless.
D. nonconformity = 2. deviation
Anyone who deviates from the proposed way of behavior is considered to be a nonconformist, someone who doesn't conform to those set of rules.