Specialize means that you are good at something and are and expert at
The correct answer is <span>He refused to hear the Bonus Army perspective.
He did as he wished and didn't want to give them what they wanted. There was even a belief spread that they were actually early communists who wanted to fight against the government. His dealing with the bonus army was one of the reasons why he lost the next elections.</span>
the answer is D. Some of the world’s highest waterfalls can be found in three countries: Venezuela, South Africa, and Peru.
a colon in a sentence means the auther can end the sentence with a period if he wanted and the sentence would still be correct.
in this case the sentence could be, "Some of the world’s highest waterfalls can be found in three countries."
this still looks and sounds correct and is a fully functioning sentence.
Its B. A prefix is an additon to the root of a word and is never the base of a word.