Habib,an Exchange Student from Iran,is Doing His Thesis in the United

Habib,an exchange student from Iran,is doing his thesis in the United States.He notices that people eat sandwiches directly from their paper bags and do not use plates.He is confused as people use eating utensils in his country.This scenario exemplifies _____ differences between Habib's native country and his country of residence.

A) ethical
B) language
C) climatic
D) cultural