"Epoch" means era or period of time, so "era" is the correct answer. None of the other answer choices are close in meaning to "epoch": "riddle" means a verbal puzzle; "insomnia" means a condition in which one cannot sleep; "option" means choice or alternative; and "summit" means apex or the highest point of something.

"Epoch" means a period of time or era, so "era" is the correct answer. None of the other answer choices are close in meaning to "epoch": "debris" means trash or wreckage; an "enigma" is a puzzle or riddle; "literacy" means the knowledge of how to read and write; and a "nomad" is a wanderer or vagrant.

"Peril" is an noun that means significant danger, so "danger" is the correct answer.

"Stamina" is a word often seen in an exercise context and it means "endurance" or the ability to persevere. "Resignation" is giving up; "transience" is something that is fleeting; "reluctance" is unwillingness; and "spirit" is enthusiasm.

"Elation" is a feeling of deep happiness, so "happiness" is the correct answer. It is an antonym of "sadness." To help you, "ambivalence" means uncertainty or the presence of conflicting ideas, "despondency" is a feeling of hopelessness and sadness and is almost the complete opposite of "elation," and "frivolousness" means the quality of being unnecessary and wasteful.

"Predicament" is a noun meaning " a difficult, unpleasant, or embarrassing situation," so we need to pick out an answer choice which is a noun meaning something like "a problem." While "prediction" might sound like "predicament," a "prediction" is "a thing predicted; a forecast" or "the action of predicting something;" since the meaning of "prediction" isn't close to "a problem," it can't be the correct answer. "Plight," however, when used as a noun means "a dangerous, difficult, or otherwise unfortunate situation." Since "plight" is the answer choice closest in meaning to "predicament," it is the correct answer.

A "stereotype" is the application of an overly general belief about a certain type of people. For example, there is a stereotype that all sushi chefs are Asian, when in actuality this is not at all true and there are many sushi chefs who are not Asian. Therefore, the best synonym would be "generalization." While a stereotype is a type of assumption, "generalization" is the more precise synonym; therefore the answer choice "assumption" is incorrect.

"Flak" is a noun that means criticism. "Disapproval" is the best choice since it shares the same definition. Considering the other choices, "debris" means the remains of something broken, "mosaic" means a flat piece of art made of small pieces of colored material, a "consideration" is something that is thought about or needs to be thought about for some or idea to work, and an "obstacle" is a hindrance, often a physical one.

A "vow" is a solemn, formal promise. "Oath" is the best choice, since it means a formal promise. Considering the other choices, "bow" means a weapon used to shoot arrows or a decoration added to gifts made of looped sections of ribbon; "betrayal" is an antonym of "vow" and means the act of breaking a promise or violating the trust of someone, and "suggestion" means an idea put forward as an option of proceeding or adjusting how one is doing something.

The Latin root "grat" means pleasing, so a “gratuity” is a “tip,” or money given to show you are pleased. A “hermit” is a recluse, someone who lives alone and avoids people; “vow” means promise; and an “outcast” is someone excluded from society.