Explanation:

- Exodus means a mass departure of people.

- Option 1: Influx means an arrival or entry of large numbers of people or things. This is the opposite of exodus.

- Option 2: Home-coming refers to the act of returning home. It is not synonymous with a mass departure.

- Option 3: Return generally means coming back to a place. It does not match the meaning of a large-scale departure.

- Option 4: Restoration means returning something to its former condition. It is unrelated to the movement of people.