Which of the following requires less frequent cleaning?

Draperies generally require less frequent cleaning compared to the other options listed. Unlike hardwood floors, upholstered furniture, and end tables, which can accumulate dust, dirt, and stains more readily due to their use and exposure to various activities, draperies often only need cleaning on a seasonal basis or when they become noticeably dirty. This is because they tend to be less interacted with daily compared to the other options that are frequently touched or used.

Additionally, the materials used in draperies, such as heavier fabrics, can often hide dust and grime, making them appear cleaner for longer periods. In contrast, hardwood floors may require more frequent sweeping and mopping, upholstered furniture can collect dust and allergens with regular usage, and end tables often get marked or stained from items placed on them. Therefore, draperies are the best choice for requiring cleaning less frequently.