The correct order of sequence is: C. Generating a business idea D. Performing a project-specific factor analysis E. Conducting a pre-feasibility analysis A. Carrying out a detailed project analysis B. Developing an infrastructure prototype for project development In this sequence, the project approval process starts with generating a business idea. Then, a project-specific factor analysis is performed to assess the various factors and considerations specific to the project. Next, a pre-feasibility analysis is conducted to evaluate the feasibility and viability of the project. After that, a detailed project analysis is carried out, taking into account all relevant aspects of the project. Finally, an infrastructure prototype is developed for project development. Therefore, the correct sequence is CDEAB.