Answer: Cultural lag
Step-by-step explanation:
The cultural lag is the term which is used for the cultural idea or concept that the culture specifically taking a lots of time for the solving the various types of social issues and the innovation of the various types of technology that is caused by the lag.
The main causes of the cultural lag is due to the technological advancement, cultural change in the society, globalization and change in the user needs.
According to the given question, the cultural lag is basically explain the gap between the given instances based on the self-portraiture by the camera and the selfie.
Therefore, Cultural lag is the correct answer.