Question

Read the sentence below and answer the following question: If that was a disagreement, then Mount Everest is an ant hill and the Mississippi River is a trickle. Which answer correctly summarizes the meaning of this sentence? A sarcastic statement suggesting the argument was not bad at all A satirical statement describing the subject of the argument An ironic statement suggesting that something loud can also be small
An understatement describing a bad argument using analogy

Answer 1

An understatement describing a bad argument using analogy

Comparing a giant mountain to just a hill or a huge river to just a trickle of water shows that the 'argument' was much bigger than just an argument. This passage is an extreme understatement shown through this analogy. 

Answer 2

The answer to your question would be that the answer that summarizes the meaning of the sentence correctly is the following one: An understatement describing a bad argument using analogy.

An understatement is the presentation of something as being smaller or less good or important than it really is. By saying that Mount Everest, an enormous mountain, and the Mississippi River, a huge river, are just a hill and a trickle of water just like the disagreement, you are stating that what happenned was more than a minor disagreement.