Read the passage:
and on the day we meet to walk the line
and set the wall between us once again
we keep the wall between us as we go
to each the boulders that have fallen to each

which line develop the idea that walls prevent people from each other?

a. and set the wall between us once again

b. we keep the wall between us as we go

c. and on a day we meet to walk the line

d. to each the boulders that have fallen to each

which line develop the idea that walls prevent people from each other