Correct Answer:
Option B - Migration is the movement of massess from one place to another. If the people in a large number leave a place their number reduces from that place but where they go, the population of that place increases which is the direct indicator of measuring population change of a place.
B. Migration is the movement of massess from one place to another. If the people in a large number leave a place their number reduces from that place but where they go, the population of that place increases which is the direct indicator of measuring population change of a place.