Which of the following are potential barriers to policy implementation?

Limited funding and political opposition are indeed significant barriers to policy implementation. When a policy requires financial resources and those are not available, it can hinder the execution of even the most well-designed plans. Without adequate funding, programs may lack the necessary infrastructure, personnel, and resources to operate effectively, leading to partial or failed implementations.

Political opposition adds another layer of complexity; if key stakeholders, lawmakers, or influential groups oppose a policy, they can create significant obstacles. This opposition might manifest as legislative blockages, public protests, or negative media coverage, all of which can derail or delay the implementation process.

In contrast, the other options list conditions that either facilitate successful implementation (such as state mandates, public support, expert consensus, and effective communication) or do not typically represent barriers to the process.