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Question

Difficulty: MediumAntonym Context Clues

Read the sentence below. Based on the antonym context clue provided, which vocabulary word correctly completes the blank?

Answer:Unlike the obscure and ambiguous summary provided in the initial incident report, the lead investigator submitted a remarkably 【lucid】 explanation that made every detail immediately understandable.

Answer

lucid
The sentence uses the contrast transition 'Unlike' to oppose the 'obscure and ambiguous' initial report with the investigator's explanation, which 'made every detail immediately understandable'. Therefore, the blank requires a word meaning clear, intelligible, or easily understood, making 'lucid' (or an equivalent term such as 'coherent' or 'explicit') the correct answer.

Step-by-Step Solution

1
Identify the contrast signal word and the context clues
The preposition 'Unlike' signals an antonym relationship between the initial report and the lead investigator's explanation.
Contrast signal words establish an opposite relationship between two characterized elements.
2
Analyze the descriptive traits contrasted in the sentence
The initial report is described as 'obscure and ambiguous' (vague, hard to understand), while the new report 'made every detail immediately understandable'.
The target word must mean the direct opposite of obscure/ambiguous and align with being completely clear and easy to comprehend.
3
Select the precise vocabulary term matching the deduced meaning
The word 'lucid' directly denotes clear, easily understood, and intelligible thinking or writing.
'Lucid' provides the exact antonym required by the structural contrast.

Key Concept

Identifying antonym context clues through contrast markers such as 'unlike' to infer precise word meaning.
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Topics

Antonym Context Clues

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