The correct answer is C. To show a real-life example of a volcano.
Explanation
The image shows a satellite or aerial photo of the eruption of a volcano. This photo is an example of a real-life visual resource because it shows a natural, real-life phenomenon just as it occurs. These resources are generally used to observe the details of phenomena like this that are difficult to access by other means. So the correct answer is C. To show a real-life example of a volcano.
