Explanation
Correct answer: C.
Choice C is the best answer. This choice most effectively emphasizes "a similarity" by identifying a trait the works share: "both Erasure and Home Grown include discarded objects."
Why the other choices are wrong
Choice A
Choice A is incorrect. This choice doesn’t "emphasize a similarity." Instead, this choice shows how the materials used in the two works are different. Notice the use of the contrast word "however."
Choice B
Choice B is incorrect. This choice doesn’t "emphasize a similarity between the two works." While it says that Tubbs’s work "often features discarded objects," it doesn’t provide details about the two works in question.
Choice D
Choice D is incorrect. This choice doesn’t "emphasize a similarity." Instead, this choice shows how the works were produced at different times.