Choose the correct transitional device: The first trial failed. ____, the researchers refined the method and tried again.

  • A. Similarly
  • B. Undeterred
  • C. In contrast
  • D. For instance

Explanation

The second sentence describes persistence in the face of the failure just reported, and undeterred captures exactly that relationship. Similarly and in contrast both compare two things rather than continue a narrative, and for instance would introduce an example. The connector must match the logical move being made.

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