Which conclusion is best supported by the fact about Australia’s population after the 1851 gold rush began?

Which conclusion is best supported by the fact about Australia’s population after the 1851 gold rush began?

• AThe gold rush period was associated with rapid population growth in Australia.Correct
• BAustralia’s population growth was slow and steady for the next century.
• CThe gold rush began because Australia’s population had already doubled.
• DAustralia’s population more than doubled in the year 1851 alone.

Because the fact states that Australia’s population more than doubled in the 10 years after the 1851 gold rush began, it supports the conclusion that this period was associated with rapid population growth.