The US Army Publishes a List of "Must Know Items" About

Multiple Choice

The U.S. Army publishes a list of "Must Know Items" about South Korea for American soldiers who are stationed there. One item says, "Don't be surprised if you see two Korean women or men walking arm in arm. They are just good friends, and there is nothing sexual implied." The Army is alerting soldiers to

A) material culture.
B) feeling rules.
C) reverse ethnocentrism.
D) idioms.