This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to bake a sweet potato pie
Place the flour, salt and butter or shortening into a blender fitted with a steel blade.
Blend the mixture until it looks like crumbs.
Remove the crust from the blender and place it on a cutting board.

Choices:
[a]. Press down firmly to maintain speed as you move the blade over the grain of the crust. Don't crush it, once you're done, leave the crust out..
[b]. Blend a few cubes of butter and salt for flavor. Heat the butter and salt to boiling..
[c]. This method displays the pie filling better and makes it easier to cut it up. Lay the pie filling on top of the crust..
[d]. Add the water one tablespoon at a time until the dough forms a ball. Roll the crust out using a rolling pin into a 12 " (30 cm) circle..
The answer is:
[d].