Answer:
b. Invasion
Step-by-step explanation:
Invasion -
It refers to the process , where some fresh or new type of people captures a particular place or are , is referred to as the process of invasion.
Invasion of institution is an example , where the people of some other country of native tries to capture the institute and run it with proper rights .
The process of invasion can be legal as well as illegal .
Hence , from the given information of the question,
The correct term is b. invasion .