Bunuel
LSAT Logical Reasoning bible explanation:
The conditionality in this short stimulus is introduced by the phrase "only when". This sets up the following conditional relationship, which is the economic principle referred to the question stem:
EEG = a nation can experience economic growth
CCB = consumer confidence balanced with a small amount of consumer skepticism
EEG -> CCB
A. This is a classic Mistaken Reversal incorrect answer. The answer choice simply reverses the two terms of the economic principle. Just because the necessary condition occurs does not mean that the sufficient condition occur.
B. This answer is a version of a Mistaken Reversal: the answer reverse the terms of the economic principle and at the same time confuses the reader by attempting to equate "prevailing attitude is not skepticism' with "consumer confidence balanced with a small amount of consumer skepticism". The Reversal is sufficient to eliminate this answer, and of course the two phrases do not equate.
C. This is an Opposite Answer. According to the contrapositive of the economic principle, if a nation does not have a balanced consumer confidence, then that nation will not experience economic growth. This is the opposite of the answer choice, which stealthily drops the "not" that should appear before "experience economic growth.''
D. This is the correct answer. The answer choice manipulates the terms a bit, forcing you to recognize that the negation of "consumer confidence balanced with a small amount of skepticism" is phrased as the "prevailing attitude of consumers is exclusively confidence". This creates the contrapositive:
not CCB -> not EEG
E. This answer is another version of a Mistaken Reversal. Te only diferrence between this answer choice and answer choice (A) is that this answer plays a Shell Game and reverses the confidence and skepticism elements from the stimulus.