Superlatives are how these places got famous
Almost every entry here holds a record of some kind: the tallest, the largest, the driest, the most biodiverse. That is usually why it entered public awareness in the first place, and it is what the questions test.
Where two candidates feel equally plausible, think about which one actually holds the record rather than which is better known. They are not always the same, and the wrong option is frequently the more famous of the pair.