The main purpose of the passage is to describe evidence linking the volcano Samalas to the Little Ice Age.
Hence option C is correct.
What was the largest volcanic eruption ever?
The explosion of Mount Tambora is the largest ever recorded by humans, ranking a 7 (or "super-colossal") on the Volcanic Explosivity Index, the second-highest rating in the index.
Learn more about volcano Samalas
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