SAT English Practice Question

The scientist's research focused on the impact of climate change on the migratory patterns of birds. She found that warming temperatures were causing birds to shift their migration routes to the north, which could have significant consequences for their survival.

1. A.Warming temperatures were causing birds to shift their migration routes to the north, and this could have significant consequences for their survival.
2. B.Warming temperatures were causing birds to shift their migration routes to the north; this could have significant consequences for their survival.
3. C.Warming temperatures were causing birds to shift their migration routes to the north, so this could have significant consequences for their survival.
4. D.Warming temperatures were causing birds to shift their migration routes to the north, because this could have significant consequences for their survival.