The Younger Dryas Event Tells Us That _____________

Multiple Choice

The Younger Dryas event tells us that _____________.

A) we have not always fully understood proxy records,since it turns out that what we call the Younger Dryas event actually took place before the Elder Dryas event
B) climate change has not always necessarily been a gradual process
C) ice core samples are unreliable proxy records
D) the more recent warming trends have typically been associated with unusually dry periods