D) clarify an abstract concept.
The main purpose of the analogy of the ping-pong is to clarify an abstract concept."
The third paragraph of this passage provides the following analogy: “To mentally hold your feet, imagine a ping-pong ball submerged in water. Because this analogy occurs in a discussion of how matter works in the Higgs field, it works by explaining an abstract concept in terms that are more easily grasped by readers without a background in physics.
Choices A, B, and C are incorrect because the ping pong ball analogy is used in the passage to help laypeople understand the difficult concept of the Higgs field, rather than bringing the little-known fact into wider awareness (choice A ), to create a contrast between opposing scientific theories (choice B) or disprove any established explanation (choice C).
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