Which sentence uses dashes correctly?
a. we will use the same color for the bookcase—light green—that we used on the door and window frames.
b. yard work—for example, raking leaves and planting shrubs—fills many of our autumn weekends.
c. open the windows—to let the breeze in—and the paint will dry fast.
d. i intend to—paint that bookcase tomorrow— me remove all the books.