What Purpose Are Actin Filaments Presumed to Fulfill in the Locomotor

Multiple Choice

What purpose are actin filaments presumed to fulfill in the locomotor protrusions in the peripheral domain of the growth cone?

A) They are thought to be responsible for the motile activities of the growth cone and its protrusions.
B) They are presumed to provide support for the thin,elongating axon.
C) They are thought to locate certain membrane proteins properly in the plasma membrane.
D) They are thought to play an essential role in steering the growth cone in the appropriate direction.
E) all of these choices