Food and Fun Inc., a fast-food restaurant, has organized its burger-making process in a series of steps—toasting the bun, grilling the meat patty, adding vegetables, adding fries and sides, adding drinks, and, finally, adding condiments. The serving tray moves from one worker to the next via a small, motorized conveyor belt as each worker adds ingredients. Which of the following manufacturing processes is Food and Fun following in the given scenario?