"Aghast" is an adjective that means stunned or horrified, so we need to find another adjective that means something that has to do with feeling shock or fear. While "ghastly" sounds like "aghast," it is an adjective that means terrible or shocking. Since "ghastly" does not mean the same thing as "aghast" ("shocking" doesn't mean the same thing as "shocked"), it can't be the right answer. "Alarmed," on the other hand, means frightened, and since it is the answer choice closest in meaning to "aghast," it is the correct answer.

"Contrite" is an adjective that means "feeling or expressing remorse or penitence; affected by guilt," so we need to pick out another adjective that means something like "feeling guilty." While "pennant" and "penitent" sound quite similar to one another, "pennant" is a noun meaning "a long, thin, pointed flag," while "penitent" is an adjective meaning "feeling or showing sorrow and regret for having done wrong; repentant." Because "penitent" is the answer choice closest in meaning to "contrite," "penitent" is the correct answer.

"Content" means satisfied or happy; Extensive means thorough; Important means relevant; Paltry means of small amount; and Enormous means huge.

"Lonely" describes someone who feels alone or is friendless, so "friendless" is the correct answer. "Popular" is an antonym of "lonely"; it describes someone who has many friends. "Talkative" is a synonym of garrulous and describes someone who talks a lot. "Joyful" means very happy. "Chaotic" means involving disorder or confusion.

"Avid" means enthusiastic, or being very eager and passionate about something.

None of the other words are synonyms of avid:

"Trivial" means not important.

"Rigorous" means intensive, demanding or difficult.

"Pompous" means having an annoying sense of self-importance or something that is excessively pretentious.

"Acidic" means the quality of having acid, or of being sour.

"Doleful" means "melancholy," sad, or depressing.

None of the other words are synonymous with doleful:

"Mediocre" means average or ordinary.

"Indomitable" means invincible, stubborn or unyielding.

"Deer-like" means related to a deer, or possessing qualities of a deer. Deer are often described as having doleful eyes.

"Elated" means wildly excited and happy, or euphoric.

"Melancholy" is an adjective describing an emotion synonymous with "somber." The rest of the answers are all closely related: "Excited," "Anxious," "Antsy," and "Nervous" are all emotions, but they are not emotions related to sadness in the way "melancholy" and "somber" are.

"Distraught" and "fraught" are synonyms describing a person's emotional state, a deeply upset and disquieted one. These words are opposite in meaning to the rest of the answer choices, which all describe pleasant states.

"Bashful" means shy, reserved, or inhibited. "Broken" means not functional, and "demolished" means destroyed or ruined. "Carefree" and "blithe" both mean happily untroubled and unworried.

To be "suspicious" of someone or something is not to trust that person or thing. "Ignorant" and "unschooled" both mean uneducated or lacking knowledge. "Dun" is a gray-brown color, and "umber" is a dark brown color.