The correct answer is D. Example 1 helps explain the complex process of photosynthesis, while Example 2 gives a vivid example of what the process produces in the real world.
Explanation:
The first example shows explicitly the process of photosynthesis, which allows plants to obtain energy and thrive. In this image, the input (substances for the chemical reaction) and output (substances at the end of the chemical reaction are represented). Indeed, the image shows sunlight, carbon dioxide, water, and minerals enter the plant, and this results in oxygen and glucose. In contrast, the second example does not explicitly show this process but shows the photo of a tree, which is a vivid and realistic example of this process including the result of photosynthesis. According to this, the correct answer is D.
