1.) "Good fences make good neighbours."

Spring is the mischief in me, and I wonder
If I could put a notion in his head:
"Why do they make good neighbours? Isn't it
Where there are cows? But here there are no cows.
Before I built a wall I'd ask to know
What I was walling in or walling out,
And to whom I was like to give offense.

Which theme does this excerpt from the poem "Mending Wall" express?

a.) Walls can serve to keep things out as well as keep things in.

b.) Walls are only used to keep animals in a confined area.

c.) Everyone agrees that walls are useful.

d.) All good neighbors agree with one another.

a.) Walls can serve to keep things out as well as keep things in.