The greatest risk to change control in business application development over the complete life cycle is the introduction of requirements that have not been approved. Requirements are the specifications or expectations of the business users or stakeholders for the application, such as the features, functions, or performance1. Change control is the process of identifying, evaluating, approving, and implementing changes to the application, such as the design, code, or configuration2. By introducing requirements that have not been approved, the organization can face significant risks, such as:

Scope creep, which is the uncontrolled or unauthorized expansion of the project scope, and can result in increased costs, delays, or errors3.

Quality issues, which can affect the reliability, usability, or security of the application, and can lead to defects, failures, or breaches4.

Stakeholder dissatisfaction, which can arise from the mismatch or inconsistency between the delivered application and the expected application, and can cause complaints, disputes, or litigation5.

The other options are not the greatest risk to change control, because:

Emphasis on multiple application testing cycles is not a risk, but rather a benefit or a best practice for change control, as it can help to ensure that the application meets the requirements and standards, and that the changes are effective and efficient.

Lack of an integrated development environment (IDE) tool is a challenge, but not a risk, for change control, as it can affect the productivity, collaboration, or integration of the developers, and can cause difficulties or inefficiencies in the development process. However, it does not directly affect the requirements or the quality of the application, and it can be overcome by using other tools or methods.

Bypassing quality requirements before go-live is a risk, but not the greatest risk, for change control, as it can compromise the quality or performance of the application, and can expose the organization to errors, failures, or breaches. However, it is less likely or frequent than introducing requirements that have not been approved, and it can be detected or prevented by using quality assurance or quality control techniques.

References =

Requirements - CIO Wiki

Change Control - CIO Wiki

Scope Creep - CIO Wiki

Quality - CIO Wiki

Stakeholder Management - CIO Wiki

[Software Testing - CIO Wiki]

[Integrated Development Environment (IDE) - CIO Wiki]

[Quality Requirements - CIO Wiki]

[Software Development Life Cycle - CIO Wiki]