"Drastic" is an adjective that means "severe or serious," so we need to pick out another adjective that means "severe or serious." While "moderate" also has to do with degrees of seriousness, "moderate" means "not serious." Because "moderate" means the opposite of "drastic," it can't be the right answer. "Extreme," on the other hand, means "very serious or severe," and because it is the answer choice closest in meaning to "drastic," it is the correct answer.

The word "complex," when used as an adjective, means "having parts that connect or go together in complicated ways," or "not easy to understand or explain: not simple." So, we need to pick out an answer choice that means something like "having many connected parts" or "not simple." Since "intricate" means "having many parts" or "very complicated or detailed," "intricate" is the answer choice closest in meaning to "complex," so "intricate" is the correct answer.

"Ravenous" is an adjective that means "extremely hungry," so we need to pick out an answer choice that also means "extremely hungry." While "raven-like" might look like the correct answer because "ravenous" contains the word "raven," the meaning of "ravenous" doesn't have to do with ravens, so "raven-like" can't be the correct answer. "Famished," however, means "extremely hungry," so it is the correct answer.

"Precise" is an adjective meaning "marked by exactness and accuracy of expression or detail," or "exact, accurate, and careful about details" when referring to people, or "used to emphasize that one is referring to an exact and particular thing" (such as in "at that precise location"). So, we need to pick out an answer choice that means something like "exact," or is used to indicate particular things. Since "exact" is a synonym of "precise," "exact" is the correct answer.

"Treacherous" is an adjective with two different meanings: "guilty of or involving betrayal or deception," or "hazardous because of presenting hidden or unpredictable dangers," which is used to describe things like ground, water, or conditions. So, we need to pick out an answer choice that means something like "hazardous." Since "dangerous" means the same thing as "hazardous," "dangerous" is the answer choice closest in meaning to "treacherous" and the correct answer.

"Extraneous" is an adjective meaning "irrelevant or unrelated to the subject being dealt with," "of external origin," or "separate from the object to which it is attached." Since "unrelated" is the answer choice closest in meaning to "extraneous," "unrelated" is the correct answer.

Satisfying can be plugged into the sentence to maintain the correct meaning. 

"Minor" can only be replaced by the word "small," to maintain the meaning of the sentence.

“Fortuitous” is an adjective hat means either “happening by accident or chance rather than design” or, informally, “happening by a lucky chance; fortunate,” so we need to pick out an answer choice that means something like “happening by accident” or “fortunate.” That means that “purposeful” cannot be the correct answer, because “purposeful” can mean “intentional,” making it an antonym, not a synonym, of “fortuitous.” “Lucky,” however, is an adjective that means “having, bringing, or resulting from good luck,” and because “lucky” is the answer choice closest in meaning to “fortuitous,” “lucky” is the correct answer.

"Fancy" could be substituted into the sentence to maintain a similar meaning.