How do you know or tell when / which works cited entry is being cited whenever there is a citation in the paragraphs ?

Which punctuation mark would best fill in the blanks in the following sentence in the past year i visited denver, colorado portland oregon and seattle washington

What is a predic. how did the great railroad strike of 1877 demonstrate the power of workers? ate noun?

What is the best definition of detonation a.) the meaning of the word in a different language b.)the dictionary meaning of the word c.) the additional meaning that comes from the feeling one gets from a word d.) the meaning of irony