Refer to the Scenario Below to Answer the Following Questions

Refer to the scenario below to answer the following questions.
Application of Early Theories of Motivation (Scenario)
Weston has two very different first-line supervisors who report directly to him. Aaron really "cracks the whip" at his employees and firmly believes in strict controls and punishment for those who do not meet company expectations. Zach, on the other hand, has very few controls and believes that as long as people know what their objectives are, they will exercise self-control and self-direction. Aaron has been trying to use working conditions to increase the level of productivity in his department. When workers complained about unsafe working conditions, Aaron supplied them with protective gear and implemented new safety procedures. However, despite the improved working conditions, employees were still not motivated. Zach, on the other hand, had chosen to delegate responsibility and offer workers opportunities for growth. These efforts appeared to be much more successful at improving productivity.
-According to Herzberg, Aaron was trying to use __________ to increase productivity.

A) expectancy theory
B) motivation factors
C) intrinsic factors
D) three-factor theory
E) hygiene factors