"Marauder" is a plunderer, or someone who raids people for profit.

"Offspring" means child of someone, or progeny.

"Connoisseur" means someone who is an expert in arts or matters of taste.

"Exemplar" is someone who is imitated.

"Jockey" is a professional horse racer.

A "ruffian" is a "hoodlum," a troublemaker or a delinquent.

None of the other words are synonymous with ruffian:

"Spectator" means a bystander or someone who views an event or a spectacle.

"Pontiff" means the pope, or the leader of the Catholic Church.

A "scribe" is someone who makes hand-written copies of texts. Scribes still exist, but were more common in the time before the printing press was invented.

A "cherub" is a very cute baby, or a chubby angel child with wings.

A "firebrand" is a person who incites a revolution or some great change, so "radical," which can mean a revolutionary, is the correct answer. A "professor" is a person who teaches students at a college or university. An "explorer" is a person who travels and discovers new lands. A "voyage" is a long trip, usually made by ship. A "continent" is a very large body of land.

"Chemists" and "alchemists" are people who work with chemical processes. Both words also share a root: chem-. The other words may also describe kinds of people, but they are not at all related to the word chemical.

"Antagonist" is an antonym of "protagonist." Whereas a "protagonist" is a hero, an "antagonist" is a villain. The answer choice that is closest in meaning to "villain" is “adversary," which means enemy or opponent.

A "bard" is a poet.

"Physician" means "a doctor."

"Henchman" means a ruthless subordinate, usually a criminal.

"Rascal" means a dishonest or unscrupulous person.

"Churl" means someone who is rude and surly.

"Queen" is a female monarch.

"Surrogate" means replacement or substitute, so "substitute" is the correct answer. For clarification, "protagonist" means hero in a story and is the antonym of "antagonist," which means villain in a story, while "adversary" means opponent and "foe" means enemy.

"Antagonist" is defined as an adversary, rival, or foe. Of the answer choices, "opponent" has the closest meaning.

"Peasant" means worker; Royalty usually refers to the King, his family, and his court; Bird is a type of animal; Church is a place of worship; and Sculpture is art usually carved out of a solid material.