A. Uses the vocab word incorrectly. ‘Exploit’ means to take advantage of which does not make sense in the context of the sentence (the correct word for that sentence is probably ‘explosion’).
B. Is correct because ‘esteem’ means to hold respect for.
It could possible be ironic because the rest of the world was technically already "discovered", but just not by the Europeans specifically. Therefore it is ironic, simply because they are Naive
Just try using each word in the sentence, and choose the one that makes the most sense!
1) B - Approximately.
2) D - Strength.
3) A - Named.
4) D - Set.
5) C - Creativity.
6) C - Feat.
7) D - Will have broken.
8) A - Decides.
