Explanation:

Here’s the breakdown:

- Option 1: William Ouchi is the person who came up with “Theory Z.” He studied Japanese management and compared it with American styles, wrapping his findings into this theory about increasing loyalty between managers and workers through job security, consensus decision making, and slow evaluation.

- Option 2: Peter F. Drucker is known for big contributions to management, but not Theory Z. He’s behind things like “management by objectives.”

- Option 3: Joseph H. Jurau focused on participative management, but Theory Z isn’t his baby.

- Option 4: Douglas McGregor made Theory X and Theory Y, which talk about two contrasting views on worker motivation—not Theory Z.