Cultural Lag belongs to William Ogburn (1886-1959). Ogburn wanted to draw attention to the incompatibility that arises in the process of change in the reciprocal relationship of the material and spiritual culture in a social system. According to him, there forms a gap when the changes in material culture are followed with a certain delay by spiritual culture. It is also an example of cultural lag when people who did not own mobile phones until recently talk on the phone in a way that annoys people in their surroundings after receiving a mobile phone. The above example can be considered as cultural lag. The correct option is A.