I believe the answer is: the nonmaterial component of Korean culture.
Non material component of a culture refers to component of the culture that we could not physically touch. This could include things such as gestures, language, values,folkways, norms and mores. In the example above not covering bodies with towel is influenced by norms rather than the towel.
Muhammad, the founder of Islam and the proclaimer of the Qurʾān.
There are 7 basic facial expressions. Anger, fear, disgust, sadness, surprise, contempt, and happiness
You didn't list the options to choose from but I found them elsewhere.
The answer is - couples in happy marriages make external attributions for negative behavior and internal attributions for positive behavior; while couples in unhappy marriages make internal attributions for negative behavior and external for positive. Happy couples blame outside forces for issues whereas unhappy couples blame each other.
The tools that labor can use against management during negotiations would be holding strikes, picketing, and lockout. The only tool that they cannot use while there is an ongoing negotiation would be boycott.
The answer would be letter D boycott.