Which of the following are types of change defined in ITIL?

The correct answer is based on the specific classifications of change as defined in ITIL, which includes Standard Change, Normal Change, and Emergency Change.

Standard Change refers to pre-authorized, low-risk changes that follow a procedure or risk assessment. These changes are typically routine and can be implemented without requiring additional approvals or assessments each time they occur. An example might be the addition of a new printer to a network using a documented and well-understood process.

Normal Change describes changes that must go through a specific assessment and approval process before they can be implemented. These changes carry varying levels of risk and impact, and therefore need careful evaluation and planning. For example, a significant infrastructure upgrade would fall under this category.

Emergency Change is designated for changes that need to be implemented as quickly as possible, often in response to a critical issue or an incident that poses significant risk to the organization. An example could be a patch that needs immediate application to fix a security vulnerability.

The other options, while they include terms that may somewhat relate to change management, do not align with ITIL's precise definitions. For instance, terms like Routine and Critical may not fit the standardized ITIL classifications. Such distinctions are crucial for understanding the framework and ensuring effective change management practices.