From the clues given in the sentence it is hard to tell whether the evidence provided by the comparison of the wife and the husband will prove or disprove the “opposites attract” theory, but you know that the husband and wife are being compared in some way to prove some further point; therefore, to solve this problem you have to see which answer choices fit with this format. If the wife were “eccentric” (interesting, unconventional and extraordinary) and the husband was defined by his “banality” (lack of originality, boringness) it would make sense for the two of them to act as an “archetype” (a typical example of something) for the theory that opposites attract. To provide additional help, “haughty” means arrogant, bold; “humility” means possessing modesty and being humble; “mockery” means make fun of; “gregarious” means outgoing, sociable; “cowardice” means fear, not being brave; “anachronism” means something that does not fit in the time period; “languid” and “lethargy” both refer to having no energy or motivation; “prototype” means an original example of something; “envious” means jealous; “modesty” means humility, or the quality of being unassuming; “invective” means abuse.

The best beginning clue for this question is the fact that the scientists are described as being "all but unintelligible." This means that they are basically completely unintelligible to those who do not understand their language. "Jargon" is a system of terms that are used in a profession but are very difficult to understand for those who are outside of the profession. The term "laity" is often used in religion to describe those who are not part of the clergy; however, it can also mean non-professional people as well. Therefore, this is a good contrast to the jargon-laden scientists described in the sentence. Finally, such language is difficult to understand. Something that is "cryptic" is obscure in this manner.

Note that while "academically . . . scholarly . . . public" could also be correct, the best answer is the one whose words more specifically reference their unintelligibility. While "acadmic" and "scholarly" work is often obscure and hard to understand this is not an inherent part of their definitions as words.

The fact that Laura's friends feared to introduce anything interesting seems to hint that the conversation was quite boring and uneventful. The general idea is that it has nothing of real "bite" to it. The word "aseptic" directly means having no disease. Think of an antiseptic agent. This gets rid of anything that is diseased. A "septic tank" is where human waste is stored when there is no connection from a house to a sewage system. Apparently the friends feared anything that could disturb the peace or, to put it another way, the tranquillity of the gathering.

The first two blanks are opposites of one another. Contextual clues are "mild flavors of inland cuisine" and "he much preferred... of the coastal regions." The clues for the last blank are "indulged so frequently" and "discern each individual flavor." Of the answer choices, only "insipid, piquant, and epicure" fit the meaning of the sentence.