A “rascal” is someone prone to bad behavior, a scoundrel. To provide further help, a “contributor” is someone who helps something get done; a “politician” is someone tasked with making laws and governing; a “principle” is a guiding standard of belief or morals; “rakish” means charming and dashing. 

A "colleague" is a coworker or someone a person works with, so "coworker" is the correct answer. An "autobiography" is a book written by someone about that person's own life. "Assignment" means task or work given to a specific person. An "author" is a person who writes a story, novel, or other book. "Task" means piece of work that needs to be completed.

A "guardian" is another name for someone who looks after someone else or a protector. To help you, a "student" is someone who goes to school. 

A “captive” is someone held somewhere against their will under the control of another person or other people, so the answer choice closest in meaning to "captive" is "prisoner." A “student” is someone who attends school, and a "warden" is someone who is in charge of something, like a "prison warden" or a "park warden." Also, while something "captivating" is fascinating, it doesn't mean that "fascination" and "captive" are synonyms; they are not.

A “monarch” is a king or queen, so "queen" is the correct answer. A “representative” is someone chosen in a democracy to carry out the wishes of the people.

"Novice" derives from the Latin "novus," which means new, so it makes sense that a "novice" is someone who is new at something, or a "beginner." As for the other answer choices, an “expert” is someone who knows a lot about something and has a lot of experience; a “respondent” is someone who responds to or answers something; and a “representative” is someone who is chosen by the people who carry out their wishes, and a "librarian" is a person who works at and helps run a library.

A “peer” is a classmate, someone in your social group. "Fellow," when used as a noun, can mean someone doing the same thing as you are, so it is the answer choice closest in meaning to "peer." 

"Spectator" is derived from the same Latin roots as "spectacles" (glasses), "spectacle" (something that visually attracts a lot of attention), and "inspection" (an event where an authority figure looks over someone and that person's work). All of these words have something in common: seeing. So, it shouldn't be surprising that "spectator" also has to do with seeing. More specifically, a "spectator" is someone watching something, or a "witness." As for the other answer choices, a “victor” is someone who has won some competition; a “salesperson” is someone who sells something; an “illustrator” is someone who draws pictures to go with written articles or books; and a "doctor" is a medical professional who diagnoses illnesses and injuries to help people recover from them.

A “narrator” is a "storyteller." As for the other answer choices, a “witness” is someone who has seen an event, as to “witness” means to see. A "reporter" is someone who researches and writes news stories. While the narrator might be a character in a story if the story is told in first-person perspective (the "I" perspective), a "narrator" is not necessarily a "character," and the words have distinct meanings.

A "traitor" is a person who betrays the trust of another person or organization. A spy who promises to work for one country but secretly sells its secrets to a rival nation could be called a traitor. "Backstabber," similarly, refers to a person who betrayed another. An "ally" is a friend, an "employee" is someone who works for someone else, and a "vehicle" is a moving machine, like a car.