Scientists hypothesize that Earth is currently in a sixth mass extinction period when compared to the natural extinction rate. Which of the following BEST explains the baseline extinction rate?

(1 point)
Responses

the rate of species extinction as a result of water pollution
the rate of species extinction as a result of water pollution

the rate of species extinction compared to the fossil record
the rate of species extinction compared to the fossil record

the rate of species extinction caused by coral bleaching
the rate of species extinction caused by coral bleaching

the rate of species extinction if human activity did not exist

the rate of species extinction if human activity did not exist