如图所示是有关蜜蜂发育过程图解，请写出它的实际发育顺序（　　）

A．①→②→③→④

B．②→①→④→③

C．②→①→③→④

D．④→③→②→①

The volunteers try to convince people _____ the fact that some species are in danger of _____.

A．for; dying away

B．about; dying down

C．of; dying out

D．on; dying off