Which of the following best describes a concept map?

A concept map is best described as a visual tool depicting relationships between concepts, as it organizes and represents knowledge in a structured format. It allows learners to visualize how various ideas are interconnected and can help facilitate understanding and retention of information. This type of map typically includes nodes representing concepts and lines or arrows that illustrate the relationships or hierarchies between them.

In an educational context, concept maps are particularly useful for brainstorming, summarizing information, and serving as study aids. They encourage active learning by prompting students to think critically about how different pieces of information relate to one another. In contrast, the other options focus on aspects of assessment, lesson planning, or unit objectives, which do not encapsulate the essence of what a concept map serves to do.