The Present Rate of Species Loss ________

The present rate of species loss ________.

A) suggests that about 25% of all plant and animal species may be extinct by the end of the century
B) is about the same as it has been during the last 100,000 years
C) is as much as 100 times higher than at any time in the last 100,000 years
D) is slower than in recent years because of conservation efforts