Multi-choice problem: Continue writing the next sentence in this paragraph:

How to clean your room quickly and efficiently
Start by making your bed.
This will immediately make your room look much neater and cleaner. Make sure there aren't any pillows or blankets on the floor.

Pick from: a). Mix a medium sized cup of water with 4 cups of white vinegar. This will make your sheets, towels, and pillowcase appear as if they belong there.; b). Put out of place items on your bed to determine where to put them later. Occasionally flip your mattress to increase its lifespan.; c). If someone wanders in while you're trying to set your alarm clock, they might send it flying at your bed. Also, make sure to put loose curtains over the windows if you are in the bathroom.; d). A soft comforter will create a comfortable, relaxed feel for your room. Remove dust and dry stains with a dark colored paper bag.;
b).