Since she did not believe in deliberation or prudence when taking decisions, she made immediate and probably rash decisions. Option C is the only one that fits this.

This is a tough one

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Ava, a peripatetic day laborer, never failed to make _________ decisions; she believed in neither deliberation nor prudence when confronted with various choices.

Blank (i)
A. paradoxical
B. ignoble
C. headlong
D. undemonstrative
E. unctuous

OFFICIAL EXPLANATION


C

In the sentence, the word "peripatetic," or "wandering," is not vital to the blank. The final clause of the sentence is the clue that that Ava was not wise or careful when it came to making decisions. Choice (C), headlong, or "hastily," fits the meaning of "not wise." Choice (B) ignoble, "dishonorable or base," is too extreme and negative to fit in this sentence. Choices (D) undemonstrative, "emotionless," and (E) unctuous, "excessively pious" or "smug," are out of scope since we know neither Ava's emotional state or interaction with others. "Deliberate" and "prudent" are similar in meaning-therefore, choice (A) is an opposite wrong answer choice since paradoxical would require opposing or conflicting events.
Choice (C) is the credited response.