[Q]: Which of the following solutions is better for the following goal:
How can I clean grease in a sink drain?

[A]: Pour a bottle of coca cola down the sink and rinse with hot water.

[Q]: Which of the following solutions is better for the following goal:
How to sand the edges of the wooden boards.

[A]: Using sandpaper, go over the edges that are rough with the paper. Keep rubbing until the edges are smooth.

[Q]: Which of the following solutions is better for the following goal:
How to clean a leather couch.

[A]: Create a cleaning solution by mixing equal parts of water and white vinegar. Dip a soft cloth in this solution and wring it out so that the cloth is damp. Wipe the entire sofa with this cloth while rinsing the cloth in the cleaning solution when necessary. Dry the sofa with a clean towel.

[Q]: Which of the following solutions is better for the following goal:
How do I clean a high fan?

[A]:
Spray your cleaning solution into a clean pillowcase until the cloth is damp, if you are able to get close to the fan blades with a ladder. Place the pillowcase over the fan blade and drag it back off, trapping the dust inside. Turn it to a clean spot and repeat for rest of the blades.