A grocery store manager reads about _______ theory and decides to try the time and motion studies to see if it makes stocking the shelves easier. The manager observes and times all of the stock persons and sees who has the fastest and most efficient ways of stocking. After observing, the most effective method was chosen and taught to all of the stock persons. 1. Weber's 2. Taylor's 3. Fayol's 4. Weick's