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The term "biomimicry" refers to the imitation of nature’s designs and processes to solve human problems. For example, researchers studying the structure of gecko feet, with its millions of microscopic hairs that allow it to adhere to virtually any surface, have developed new adhesives that can be used to attach a variety of materials, from bandages to medical devices.

SAT · English · previous-year question

  1. A.For example, researchers studying the structure of gecko feet, with its millions of microscopic hairs that allow it to adhere to virtually any surface, have developed new adhesives, and these adhesives can be used to attach a variety of materials.
  2. B.For example, researchers studying the structure of gecko feet, with its millions of microscopic hairs that allow it to adhere to virtually any surface, have developed new adhesives, which can be used to attach a variety of materials.
  3. C.For example, researchers studying the structure of gecko feet, with its millions of microscopic hairs that allow it to adhere to virtually any surface, have developed new adhesives that can be used to attach a variety of materials, from bandages to medical devices.
  4. D.For example, researchers studying the structure of gecko feet, with its millions of microscopic hairs that allow it to adhere to virtually any surface, have developed new adhesives, and such adhesives can be used to attach a variety of materials.correct

Answer

D. For example, researchers studying the structure of gecko feet, with its millions of microscopic hairs that allow it to adhere to virtually any surface, have developed new adhesives, and such adhesives can be used to attach a variety of materials.

Explanation

Choice D provides the most parallel structure. The phrase 'and such adhesives' parallels the earlier phrase 'with its millions of microscopic hairs.' Choices A, B, and C create inconsistencies in the sentence structure. Choice A adds an unnecessary comma. Choice B uses the phrase 'which can be used,' creating a different grammatical structure. Choice C simply repeats information that is already present in the sentence.

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