Explanation:

- Option 1: Top to bottom

- In Parsons' cybernetic hierarchy of control, energy or resources typically flow from the bottom to top.

- This involves the flow of information that guides decision-making.

- Option 2: Bottom to top

- This option accurately describes Parsons' concept.

- Lower levels in the hierarchy provide energy or resources to higher levels.

- Option 3: Is derived from outside

- While the system interacts with the external environment, the main flow in Parsons' model is internal.

- Option 4: Depends upon case-to-case basis

- In Parsons' framework, the pattern is consistent rather than case-dependent.

Option 2: Bottom to top