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

How to use natural cleaning products
Pour a half cup of salt down clogged drains.
The grit from salt has sandblasting properties to reduce and remove built up scum.
After pouring salt down the drain run warm water for a few minutes so it works its way through the system.

OPT:
I. Always add the salt when working with bleach. Add half of a cup of white vinegar..
II. Remove grease from pans using a teaspoon of salt. Sprinkle liberally over the greasy pan and then follow up with a clean wet sponge or rag..
III. Once it reaches a steady flow (about 18 minutes will work) place the strainer over a clean paper towel. Rinse the drain with hot, desaturated water until no more salt is left..
IV. See how brown you're going to be when the salt settles. Mix a half cup of baking soda with 1 tbsp..
The answer is:
II.