All you need is on the photo

B

Explanation:

When immigration into an area is higher than emigration out and with other factors kept constant, you will have a situation where population will increase.

This is the case in the point of the graph labelled B. We can see a rise in population so immigration must be more than emigration. In the other points, the population is reducing which means that more orca whales are leaving than coming in.

-hails tea

explanation:

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