Final answer:
Example 4, 'Her dress sparkled as it reflected the sun,' is an example of imagery because it uses descriptive language to paint a visual image in the reader's mind, appealing to the sense of sight.
Step-by-step explanation:
The example of imagery from the options provided is "Her dress sparkled as it reflected the sun." Imagery is language that appeals to the senses, and this sentence gives a visual image of the dress sparkling, which enables the reader to picture this scene in their mind. Imagery often includes figurative language like metaphors or similes, and it aims to evoke a vivid, sensory experience in the reader.
Imagery is not merely about stating facts or simple descriptions like "The color was yellow." It involves descriptive language that paints a scene for the reader, and of the examples given, the sparkling dress is the only one that creates a specific, visual image. Thus, this is the best example of the use of imagery among the options.