Which of the following statements accurately reflect the dimensions and features of Institutional Constraints in public policy? I. Bureaucratic inefficiency and lack of trained personnel can hinder effective policy implementation. II. Fragmentation and poor coordination among different agencies lead to delays and inconsistencies. III. Rigid rules and procedures increase administrative flexibility and foster innovation. IV. Strong political will and adequate resources may not yield desired outcomes in the absence of efficient and responsive institutions. Choose the most appropriate answer from the options given below:

Which of the following statements accurately reflect the features of the policy implementation process? A. Policy implementation is a linear process that strictly adheres to initial plans without evolving. B. It involves multiple actors operating at different levels of government, such as central, state, and local institutions. C. The process is inherently inter-organizational and requires coordination among various agencies and departments. D. It exists at the interface of politics and administration, where bureaucratic discretion and political directives interact. Choose the most appropriate answer from the options given below:

The 'bottom-up' approach to policy implementation, which highlights the role of frontline officials or 'street-level bureaucrats', was developed by _______.