Answer:
The evidence that best supports the author's claim is:
"Scientists have studied climate change for years,
and they largely agree that the climate is changing.
Scientists can drill core samples in Antarctic ice and
study the carbon dioxide in these samples to see
how greenhouse gases have risen in our
atmosphere. They can also measure how quickly the
ocean is rising year after year."
This evidence provides concrete information about scientific research and measurements that confirm the reality of climate change and its effects.
Step-by-step explanation: