Which of the following is an example of a closed-ended question?

The chosen response is an example of a closed-ended question because it prompts a specific and concise answer, typically a date or a simple confirmation. Closed-ended questions are designed to elicit a straightforward response without requiring elaboration or extensive detail. In this case, asking when the last management review took place can result in a direct answer, such as a specific date, which fits the criteria for a closed-ended question.

In contrast, the other options are open-ended, as they invite more detailed responses. For instance, asking for opinions on training effectiveness or explanations about what someone does within the company encourages the respondent to elaborate and provide comprehensive insight, thus moving beyond a simple yes or no answer. Similarly, inquiring about the reasons behind an incident suggests a need for a more thoughtful, in-depth explanation, which does not conform to the structure of a closed-ended question.