Which conclusion is most consistent with the fact about migration levels in Australia in the first half of the 20th century?

Which conclusion is most consistent with the fact about migration levels in Australia in the first half of the 20th century?

• AMigration levels fluctuated during that period.Correct
• BMigration levels followed a single continuous upward trend.
• CMigration levels followed a single continuous downward trend.
• DMigration levels cannot be described as changing during that period.

Because the fact says migration levels rose and fell, the most consistent conclusion is that they fluctuated during the first half of the 20th century.