The way the author BEST supports the claim in the last line of the passage that North America is fortunate to have Old Faithful is:
- By explaining how increasingly rare it is for geysers to erupt with any regularity
According to the given question, we are asked to show the way the author BEST supports the claim in the last line of the passage that North America is fortunate to have Old Faithful.
As a result of this, we can see that from the given excerpt, there is a statement about Chile and many other island nations being lucky to have "faithful" geysers all around the world to prove that they do not erupt with any regularity.
Therefore, the correct answer is option C
Read more about geysers here:
https://brainly.com/question/8499772
