Which sentence uses dashes correctly?

a.
on the last page of my program is„the lead dancer's autograph.

b.
now we will hike„along the ridge, down the hill, and across the creek.

c.
this sweater„the one that turned up at the bottom of my closet, does not fit me anymore.

d.
i want to hear everything, but„oh, someone is knocking on the door.

What is the central idea of the "allegory of the cave"? a. most men live chained to the wall of a cave all of their lives, facing a blank wall, and trying to guess the nature of objects reflected by a fire. b. a philosopher is like a prisoner freed from the cave that comes to understand that the shadows are not reality, rather he understands reality by his experience. c. men who allow their experience to be shaped by perceptions and shadows do not know a better life. d. a philosopher must return to share the news of enlightenment with others who will not necessarily accept his good news. part