Which item is a component of its related object, similar to bristle : brush?

Which item is a component of its related object, similar to bristle : brush?

• A. arm : leg
• B. stage : curtain
• C. recline : chair
• D. key : piano

Answer: (D)

The relationship between the two words in the pair "bristle : brush" indicates that a bristle is a fundamental part of a brush, serving an essential function in its overall purpose. To find an analogous relationship, we look for a pair where the first word is a vital component of the second.

In the case of "key : piano," a key is indeed a critical component of a piano. Without keys, a piano would not be able to function, as they are necessary for producing sound. Each key plays a role similar to how each bristle contributes to the functionality of a brush.

The other options do not represent the same kind of component relationship. "Arm : leg" suggests parts of the body but does not demonstrate a functional component relationship (one does not serve a direct role in the other). "Stage : curtain" identifies part of a theatrical setup without a direct component relationship (the curtain does not make up the stage). Lastly, "recline : chair" describes a feature or action related to a chair but does not illustrate that recline is a physical component of a chair.

Thus, "key : piano" parallels "bristle : brush" as both pairs showcase a necessary component that plays a crucial role in the function of