The 'Ladder of Citizen Participation' is a model developed by Sherry Arnstein, which illustrates the levels of citizen engagement and the degree of citizen power in decision-making processes. This model is critical to understanding how public participation can range from non-participation to full citizen control.

Here is the correct sequential order of the 'Ladder of Citizen Participation':

1. Manipulation and Therapy: These are at the bottom of the ladder and represent non-participation. The intent is not to enable people to participate in planning or conducting programs but to educate them or engineer support for a predetermined plan.
2. Informing: This is the first step toward real participation. Citizens are informed of their rights, responsibilities, and options. However, it still lacks the provision for feedback and citizens lack the power to negotiate.
3. Consultation: This level allows citizens to have some input into the decision-making process. Public hearings, surveys, and meetings are common forms of consultation. However, it still involves limited power for citizens as the decision-making authority rests with the powerholders.
4. Placation and Partnership: These refer to achieving some degree of opinion leadership for citizens. Placation allows citizens to advise, but power holders retain the right to decide. Partnership is a more advanced level where citizens can negotiate and engage in trade-offs with power holders.
5. Delegated Power and Citizen Control: At the top level, citizens gain significant decision-making power, including control over particular programs or institutions. Delegated power involves citizens having dominant decision-making authority.

From the given options, the correct sequential order is:

A, C, E, D, B

This arrangement accurately reflects Arnstein's ladder from the least amount of citizen power to the most.