Final answer:
The sentence involving water droplets sliding quietly down the chilled glass of lemonade effectively uses imagery to engage the reader's senses and create a vivid, memorable image.
Step-by-step explanation:
The sentence "Water droplets slid quietly down the chilled glass of lemonade, succumbing to the sun's authority." is an example of imagery. This sentence appeals to our visual and tactile senses; we can picture the water droplets and feel the chilled glass implying a sense of coolness, while the phrase 'succumbing to the sun's authority' gives us a feel of the warmth of the sun and the inevitable effect it has on the cold lemonade. Imagery in writing engages readers by providing vivid details that stimulate their senses, making the scene more real and memorable.