medium · SAT Reading & Writing

The geologist argued that the sharp ridges of the mountain range were formed not by volcanic activity but by millions of years of glacial erosion. ______, the presence of 'erratics,' large boulders clearly transported from distant locations, provides further evidence of past glacial movement in the region. Which choice completes the text with the most logical transition?

1. Indeed
2. For example
3. However
4. Similarly

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