Answer:
The correct option is culture shock.
Explanation:
In the field of sociology, cultural shock can be described as the feeling of disorientation which a person experiences when he moves to a new place with new cultures or a new way of life. It is the initial kind of shock which a person feels when he/she moves to another place in the beginning.
The same, cultural shock, was experienced by Jack when he moved to Japan for an assignment. He was an in an initial state of disorientation due to the difference in culture, food and language in Japan.