SAT Reading & Writing · Transitions

A new species of orchid was discovered in a remote cloud forest, and initial genetic analysis suggested it was closely related to a…

A new species of orchid was discovered in a remote cloud forest, and initial genetic analysis suggested it was closely related to a well-known species found hundreds of miles away. ______, further sampling revealed several intermediate populations connecting the two regions, suggesting the apparent gap in distribution was simply a result of incomplete prior surveying instead of two truly isolated populations.

Which choice completes the text with the most logical transition?

Answer and explanation

Answer: D: However,

The second sentence complicates the initial genetic finding by proposing an alternative explanation, incomplete surveying instead of true geographic isolation, for the apparent gap. That kind of reconsideration is a contrast with the first sentence's framing, which however signals correctly. Similarly would suggest the second sentence echoes the first, but it reframes the finding instead. For example would present the second sentence as an instance of the first's claim, which it isn't. Consequently would incorrectly suggest the new sampling was a direct result of the genetic analysis instead of a separate line of investigation that revised the initial picture.

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