Question

A.

After all​ this, stay off the deck until the stain dries thoroughly.
B.
Before doing​ anything, put tape on anything you​ don't want to paint.
C.
With that​ done, you're ready to paint the surface of the deck.
D.
Then apply a coat of stain to the railing..


A.
After all​ this, stay off the deck until the stain dries thoroughly.
B.
Before doing​ anything, put tape on anything you​ don't want to paint.
C.
With that​ done, you're ready to paint the surface of the deck.
D.
Then apply a coat of stain to the railing.

Answer 1

The answer is After all​ this, stay off the deck until the stain dries thoroughly. The sentence starts with a concluding remark, that implies a lot has been done already. And all the other options are actions that you do before doing something else, definitely not last steps.