john decides to spend two weeks traveling in japan. while he is there, he notices that, unlike americans…

john decides to spend two weeks traveling in japan. while he is there, he notices that, unlike americans, the japanese cover their mouths when laughing. he is observing\na a more.\nb a formal norm.\nc a value.\nd a folkway.
Answer
Brief Explanations:
Folkways are informal norms or customs that guide everyday behavior. Covering the mouth when laughing in Japan is a common, informal cultural practice. It's not a formal norm (which would be more strictly enforced), nor a value (a broad - held belief about what is good or bad), and the description doesn't suggest it's'more' of something in a relevant sense here.
Answer:
D. a folkway