"Recalcitrant" means unruly and disobedient, so to solve this analogy, you have to determine the best available antonym for "pedantic." "Pedantic" means boring in paying too much attention to unimportant details, so the best antonym is "interesting." For clarification, someone who is "insightful" is discerning, someone who is "resourceful" is capable, and "delirious" means crazy or feverish.

"Congenial" means agreeable, so to solve this analogy, you have to determine the best available antonym of "debilitating." "Debilitating" means greatly weakening, so the best antonym is “strengthening.” For clarification, "diabolical" means evil. 

Since one meaning of "prone" is "lying flat, especially face downward," the first pair of words is a pair of antonyms, since "lying flat" and "standing" are opposites. We need to pick out another pair of words that form a pair of opposites. Since "up is to down" is the only answer choice that consists of a pair of opposites, it is the correct answer.

"Paltry" means insignificant or very small. To solve this analogy, you have to determine the best antonym of "harangue." "Harangue" means rebuke or scold, so “praise" is the best antonym and the correct answer. For clarification, "detrimental" means harmful, "notorious" means infamous, "pompous" means arrogant and pretentious, and "permit" means allow.

"Graceful" means possessing good balance or elegant, and "clumsy" means not having good balance or uncoordinated. To solve this analogy, you have to identify the best available antonym of "irredeemable." "Irredeemable" means not able to be saved or forgiven, and as such, the word that is its best antonym is “curable.” For clarification, "outlawed" means banned, "itinerant" means wandering or without a home, "radical" means total or revolutionary, and "determined" means strong-willed or resolute.

“Dawn” is means sunrise and “dusk” means sunset, so they are opposites. The opposite of a “prologue” is an “epilogue.” A “prologue” is an introduction to a piece of literature and an “epilogue” is a conclusion. To clarify, a “glossary” is where you find explanations to terms within a book; an “index” is where you can search for terms or items which occur in a book; a “synopsis” is the short description found on the back cover of a book and is often called a "blurb."

“Knockoff” is a noun that means a less-expensive imitation of a specific product, so we need to pick out an answer choice that describes someone who is an imitator of an innovator. While both “fan” and “copycat” might look like potentially correct answers, “fan” in this context means admirer or devotee, and makes no mention of the fan copying the person they admire, whereas “copycat,” when used as a noun, means a person who copies something, especially someone else's mannerisms. So, because a copycat imitates an innovator just as a knockoff is an imitation of a product, “copycat” is the correct answer.

“Plain” is an adjective that means not decorated or elaborate, so the words are antonyms. “Stark” is an adjective that means bare or without decoration, so we’re looking for the word that has the closest meaning to “decorated.” While things that are “decorated” may also be “pretty” or “delicate,” the words aren’t close synonyms. The same applies to “luxurious” and “opulent.” “Ornate” is an adjective that means elaborately decorated.

Of the answer choices, “ornate” is the best choice.

As we all know, “true” and “false” are direct antonyms. “Fake” is an adjective that means not genuine, so we’re looking for the word that has the closest meaning to “genuine.” “Authentic” is an adjective that means genuine and true, not fake.

Of the answer choices, “authentic” is the best choice.

“Intangible” is an adjective that means not able to be touched or sensed. Since “physical” is an adjective that means perceived through the senses, the words are antonyms. We’re looking for a pair of words that are antonyms, and that have the closest meaning to “physical” and “intangible.”

“Real” is an adjective that means actually existing, not imagined or supposed. “Fake” is an adjective that means not genuine. Neither word relates specifically to the senses. We can rule out this choice.

 “Simple” and “complex” aren't specifically related to the senses either, so we can rule out this choice.

“Substantial” is an adjective that can mean either real and tangible or of considerable importance, size, or worth. Since the second word in this pair is “unimportant,” we can rule out this choice.

 “Concrete” is an adjective that means existing in material or physical form. “Abstract” is an adjective that means not having a physical existence.

 Of the answer choices, “CONCRETE is to ABSTRACT” is the best choice.