"Abundant" means plentiful, so "plentiful" is the correct answer. 

"Sufficient" is an adjective meaning adequate, so the answer choice closest in meaning to "sufficient" is "enough," an adjective meaning of a necessary or more than necessary amount. Considering the other answer choices, "wasteful" is an adjective meaning consuming uselessly, "tasty" is an adjective meaning delicious, and "awful' is an adjective meaning terrible.

"Ample" is an adjective meaning plentiful and abundant, so the answer choice closest in meaning to "ample" is "extensive," an adjective meaning thorough or spanning over a large area. Considering the other answer choices, "limited" is an adjective meaning restricted, "lacking" is an adjective meaning being without, and "beautiful" is an adjective meaning very pretty, very attractive, or aesthetically pleasant.

"Classic" is an adjective meaning traditional or typical, so the answer choice closest in meaning to "classic" is "typical," an adjective meaning representative of a certain type. Considering the other answer choices, "unusual" is an antonym of "classic" and means abnormal or not typical, "irritating" means annoying, and "extraordinary" means beyond what is normal.

To be "bountiful" is to have plenty of something or have an "abundance" of it. "Restricted" is the antonym of abundance and indicates having a small amount. "Superb" means excellent in quality; "sufficient" means having enough; and "sparse" means having a small quantity.

The word "typical" generally means matching the general features of a given type (of thing). A "typical coffee mug" is your standard mug, having a roundish body and a handle. It "fits the mold," so to speak. Therefore, the word "typical" can also mean average or normal. A "typical mug" is likewise normal—as coffee mugs go at least. Therefore, the best answer is "average," which alone indicates such normalcy.

“Capacious” means roomy, able to hold a large amount of something. This is most similar in meaning to “commodious,” which means roomy and spacious. To provide further help, “tenacious” means stubborn, resolute; “antithesis” means evidence against the argument; “loquacious” means talkative; “homogenous” means consisting of similar or identical, things. 

"Bizarre" means strange, unusual, or odd.

“Sundry” is an adjective that means “of various kinds; several,” so we need to pick out an answer choice that means something like “of various kinds.” That means that “uniform” cannot be the correct answer, because “uniform” can mean “of a similar form to another,” making it an antonym, not a synonym, of “sundry.” “Diverse,” however, is an adjective that means “showing a lot of variety,” and because “diverse” is the answer choice closest in meaning to “sundry,” “diverse” is the correct answer.

Something that is "unconventional" is outside the norm and tradition. You can figure this out by considering the component parts of the word: "un-," a negative prefix, and "conventional," which means following typical norms and traditional. Something that is "nontraditional" is different from traditional practices. Again, this word's prefix sheds light on its meaning: "non-," a negative prefix is attached to "traditional," making "nontraditional" mean the opposite of "traditional." Something different from common practice is outside the norm. Therefore, "nontraditional" is the best synonym for "unconventional."