A. Those chewed up tennis balls in the yard are my dog's.
Answer:
It is a simile.
Explanation:
You know its a simile when they use the words like or as for the comparison (:
Imagery, plot, setting, tone
Hereś something I wrote a few days ago. It meets the requirements, but might not be what you expected. If youŕe not satisfied with it, feel free to report this answer.