ITIL Version 5 defines a change as "the addition, modification, or removal of anything that could have a direct or indirect effect on products and services." Option B is therefore the correct answer because it matches the official definition. The wording in the question is a slightly simplified version, but the meaning remains the same. Option A is the definition of an incident, which ITIL describes as an unplanned interruption to a service or a reduction in service quality. Option D refers to a problem, which is a cause or potential cause of one or more incidents. Option C resembles the idea of a configuration item or service component, not a change. ITIL also notes that changes are inevitable and can be a common cause of incidents when they are unauthorized or poorly managed, which reinforces why the formal definition matters. Since the exam is testing exact terminology from the ITIL glossary and lifecycle guidance, B is the only option that correctly defines a change according to the ITIL 5 Foundation document.