What do the extinction rates in the current "Sixth Extinction" event differ from the previous episodes of mass extinction?

They are 100 to 1,000 times faster

The answer is (c) They are 100 to 1,000 times faster.

The current "Sixth Extinction" event is happening much faster than any of the previous five mass extinction events in Earth's history. The previous mass extinction events occurred over millions of years, while the current extinction event is happening over a few hundred years.

There are a number of factors that are contributing to the current extinction event, including habitat loss, climate change, pollution, and overexploitation. Human activities are the main driver of the current extinction event.

If we do not take action to reduce the rate of extinction, we could lose up to 75% of all plant and animal species by the end of the century. This would have a devastating impact on the planet's ecosystems and could lead to the collapse of entire food webs.