Which of the following is known as table sugar?

Sucrose is commonly known as table sugar, which is the correct answer. It is a disaccharide composed of one glucose molecule and one fructose molecule. Sucrose is widely used as a sweetener in various foods and beverages, making it the most recognized form of sugar in households.

In contrast, lactose is the sugar found in milk, maltose is a sugar that occurs during the digestion of starch and is comprised of two glucose molecules, and glucose is a simple sugar that is a primary energy source for the body. Each of these sugars serves different roles and has distinct properties, but sucrose is specifically the one referred to as table sugar in everyday language.